IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0383482
(2009-03-25)
|
등록번호 |
US-8247750
(2012-08-21)
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발명자
/ 주소 |
- Lai, Laurence M. C.
- Tsontzidis, Sandra M.
- Liu, Tim Bing
- Li, Angela Chen
|
출원인 / 주소 |
- Graphic Packaging International, Inc.
|
대리인 / 주소 |
Womble Carlyle Sandridge & Rice, LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
53 |
초록
▼
A construct for preparing a food item in a microwave oven includes a plurality of heating regions including an inner heating region and an outer heating region. The inner heating region includes a susceptor including a plurality of annular microwave energy transparent areas, and the outer heating re
A construct for preparing a food item in a microwave oven includes a plurality of heating regions including an inner heating region and an outer heating region. The inner heating region includes a susceptor including a plurality of annular microwave energy transparent areas, and the outer heating region includes a plurality of susceptor projections extending radially from the susceptor of the inner heating region.
대표청구항
▼
1. An apparatus for preparing a food item in a microwave oven, the apparatus comprising: microwave energy interactive material joined to a support layer, the microwave energy interactive material being arranged on the support layer to define a plurality of heating regions,wherein the plurality of he
1. An apparatus for preparing a food item in a microwave oven, the apparatus comprising: microwave energy interactive material joined to a support layer, the microwave energy interactive material being arranged on the support layer to define a plurality of heating regions,wherein the plurality of heating regions include an inner heating region and an outer heating region, wherein the inner heating region comprises a substantially annular microwave energy transparent area within the microwave energy interactive material of the inner heating region, the substantially annular microwave energy transparent area being defined by an inner boundary and an outer boundary, wherein the inner boundary and the outer boundary each have a substantially circular shape, and wherein the inner boundary of the substantially annular microwave energy transparent area circumscribes a portion of the microwave energy interactive material of the inner heating region, andthe outer heating region comprises a plurality of elongate microwave energy interactive material projections extending outwardly from the microwave energy interactive material of the inner heating region, wherein the support layer extends between and underlies the microwave energy interactive material projections. 2. The apparatus of claim 1, wherein the substantially annular microwave energy transparent area of the inner heating region is a first substantially annular microwave energy transparent area of a plurality of substantially annular microwave energy transparent areas of the inner heating region, andthe substantially annular microwave energy transparent areas of the inner heating region are arranged as a plurality of concentric rings. 3. The apparatus of claim 2, wherein the substantially annular microwave energy transparent areas of a first ring of the plurality of concentric rings have a major linear dimension, andthe substantially annular microwave energy transparent areas of a second ring of the plurality of concentric rings have a major linear dimension that differs from the major linear dimension of the substantially annular microwave energy transparent areas of the first ring. 4. The apparatus of claim 3, wherein the substantially annular microwave energy transparent areas of a third ring of the plurality of concentric rings have a major linear dimension approximately equal to the major linear dimension of the substantially annular microwave energy transparent areas of the first ring. 5. The apparatus of claim 4, wherein the inner heating region further comprises a plurality of substantially circular microwave energy transparent areas arranged around the third ring of substantially annular microwave energy transparent areas. 6. The apparatus of claim 5, wherein the substantially circular microwave energy transparent areas are arranged in a closely spaced, tiled configuration with one another. 7. The apparatus of claim 5, wherein the substantially circular microwave energy transparent areas have a major linear dimension that is less than the respective major linear dimensions of the substantially annular microwave energy transparent areas of each of the first ring, second ring, and third ring. 8. The apparatus of claim 7, wherein the portion of the microwave energy interactive material circumscribed by each substantially annular microwave energy transparent area of the inner heating region has a major linear dimension that is greater than the major linear dimension of the substantially circular microwave energy transparent areas of the inner heating region. 9. The apparatus of claim 1, wherein the elongate microwave energy interactive material projections of the outer heating region are substantially rectangular in shape. 10. The apparatus of claim 1, wherein the microwave energy interactive material comprises aluminum having an optical density of from about 0.15 to about 0.35. 11. The apparatus of claim 1, wherein the substantially annular microwave energy transparent area of the inner heating region is a first substantially annular microwave energy transparent area of a plurality of substantially annular microwave energy transparent areas of the inner heating region. 12. The apparatus of claim 11, wherein the plurality of substantially annular microwave energy transparent areas of the inner heating region are each defined by an inner boundary and an outer boundary, the inner boundary and the outer boundary being substantially circular in shape, wherein the inner boundary circumscribes a respective portion of the microwave energy interactive material of the inner heating region. 13. The apparatus of claim 1, in combination with the food item, wherein the food item overlies the plurality of heating regions. 14. An apparatus for preparing a food item in a microwave oven, the apparatus comprising: a plurality of heating regions including a central region, a medial region, and a peripheral region, wherein the central region, medial region, and peripheral region each comprise microwave energy interactive material supported on a microwave energy transparent support layer, wherein the microwave energy interactive material is operative for converting at least a portion of impinging microwave energy into thermal energy,wherein the central region includes at least one substantially annular microwave energy transparent area circumscribed by the microwave energy interactive material of the central region, the substantially annular microwave energy transparent area being defined by an inner boundary and an outer boundary, wherein the inner boundary and the outer boundary comprise concentric circles, and wherein the inner boundary of the substantially annular microwave energy transparent area circumscribes a portion of the microwave energy interactive material, andthe medial region includes a plurality of substantially circular microwave energy transparent areas circumscribed by the microwave energy interactive material of the medial region, the substantially circular microwave energy transparent areas being arranged in tiled configuration around the central region, andthe peripheral region includes a plurality of microwave energy interactive projections comprising the microwave energy interactive material of the peripheral region, the plurality of microwave energy interactive projections extending outwardly from the microwave energy interactive material of the medial region, anda plurality of microwave energy transparent areas comprising the support layer extending between the microwave energy interactive projections. 15. The apparatus of claim 14, wherein the at least one substantially annular microwave energy transparent area of the central region is a first substantially annular microwave energy transparent area of a plurality of substantially annular microwave energy transparent areas of the central region, andthe substantially annular microwave energy transparent areas of the central region are arranged as a plurality of substantially concentric rings surrounding a centermost annular microwave energy transparent area. 16. The apparatus of claim 15, wherein the central region further includes a plurality of microwave energy transparent areas having a substantially triangular shape, anda plurality of microwave energy transparent areas having a substantially bilobal shape. 17. The apparatus of claim 16, wherein the plurality of substantially concentric rings includes a first ring, a second ring, and a third ring of substantially annular microwave energy transparent areas,the plurality of microwave energy transparent areas having the substantially triangular shape is disposed between the first ring and the second ring of substantially annular microwave energy transparent areas, andthe plurality of microwave energy transparent areas having the substantially bilobal shape is disposed between the second ring and the third ring of substantially annular microwave energy transparent areas. 18. The apparatus of claim 17, wherein the substantially circular microwave energy transparent areas of the medial region are disposed between the third ring of substantially annular microwave energy transparent areas and the peripheral region. 19. The apparatus of claim 15, wherein the central region, medial region, and peripheral region each have a respective area,the plurality of substantially annular microwave energy transparent areas comprises about 25% to about 50% of the area of the central region,the plurality of substantially circular microwave energy transparent areas comprises about 75% to about 85% of the area of the medial region, andthe plurality of microwave energy interactive projections comprises from about 1% to about 5% of the area of the peripheral region. 20. The apparatus of claim 14, wherein the central region is substantially circular in shape, andthe medial region and the peripheral region are each substantially annular in shape. 21. The apparatus of claim 14, wherein the microwave energy interactive material comprises aluminum having a thickness of from about 60 to about 100 angstroms. 22. The apparatus of claim 14, wherein the at least one substantially annular microwave energy transparent area comprises a plurality of substantially annular microwave energy transparent areas of the central region. 23. The apparatus of claim 22, wherein the plurality of substantially annular microwave energy transparent areas is of the central region are each defined by an inner boundary and an outer boundary, wherein the inner boundary and the outer boundary comprise concentric circles, and wherein the inner boundary circumscribes a respective portion of the microwave energy interactive material of the central region. 24. The apparatus of claim 14, in combination with the food item, wherein the food item overlies the plurality of heating regions. 25. An apparatus for preparing a food item in a microwave oven, the apparatus comprising: a plurality of heating regions including an inner heating region comprising microwave energy interactive material that circumscribes a plurality of substantially annular microwave energy transparent areas, the substantially annular microwave energy transparent areas each being defined by an inner boundary and an outer boundary, wherein the inner boundary of each substantially annular microwave energy transparent area circumscribes a portion of the microwave energy interactive material, andan outer heating region comprising a plurality of elongate projections, the plurality of elongate projections comprising microwave energy interactive material extending outwardly from the microwave energy interactive material of the inner heating region,wherein the microwave energy interactive material of each of the inner heating region and the outer region is supported on a microwave energy transparent support layer, andthe plurality of elongate projections of the outer heating region are spaced apart from one another on the microwave energy transparent support layer to define microwave energy transparent areas between the plurality of elongate projections. 26. The apparatus of claim 25, in combination with the food item, wherein a lowermost surface of the food item is in a facing relationship with the plurality of heating regions. 27. The apparatus of claim 25, wherein the inner heating region comprises a central heating region and a medial heating region, the medial region being positioned between the central heating region and the outer heating region,the central heating region comprises the plurality of substantially annular microwave energy transparent areas circumscribed by the microwave energy interactive material of the inner heating region, andthe medial heating region comprises a plurality of substantially circular microwave energy transparent areas arranged in tiled configuration around the central heating region. 28. The apparatus of claim 25, wherein the substantially annular microwave energy transparent areas of the inner heating region are arranged in a plurality of concentric rings. 29. The apparatus of claim 28, wherein the plurality of concentric rings includes a first ring and a second ring,the substantially annular microwave energy transparent areas of the first ring of have a major linear dimension, andthe substantially annular microwave energy transparent areas of the second ring have a major linear dimension that differs from the major linear dimension of the substantially annular microwave energy transparent areas of the first ring. 30. The apparatus of claim 29, wherein the plurality of concentric rings includes a third ring, andthe substantially annular microwave energy transparent areas of the third ring have a major linear dimension approximately equal to the major linear dimension of the substantially annular microwave energy transparent areas of the first ring. 31. The apparatus of claim 25, wherein the outer heating region defines a peripheral edge of the apparatus, wherein the peripheral edge is substantially circular in shape. 32. An apparatus for preparing a food item in a microwave oven, the apparatus comprising: a plurality of heating regions for underlying the food item, so that a lowermost surface of the food item is in a facing relationship with the plurality of heating regions, the plurality of heating regions including an inner heating region and an outer heating region, wherein the inner heating region comprises a susceptor and a plurality of substantially annular microwave energy transparent areas within the susceptor, the substantially annular microwave energy transparent areas each being defined by an inner boundary and an outer boundary, wherein the inner boundary and the outer boundary each have a substantially circular shape, and wherein the inner boundary of each substantially annular microwave energy transparent area circumscribes a respective portion of the susceptor, andthe outer heating region comprises a plurality of elongate susceptor projections extending outwardly from the susceptor of the inner heating region. 33. The apparatus of claim 32, wherein the inner heating region comprises a central heating region and a medial heating region, the medial heating region being positioned between the central heating region and the outer heating region, wherein the central heating region comprises the plurality of substantially annular microwave energy transparent areas, and the medial heating region comprises a plurality of substantially circular microwave energy transparent areas arranged in tiled configuration around the central heating region. 34. The apparatus of claim 32, wherein the substantially annular microwave energy transparent areas of the inner heating region are arranged in a plurality of concentric rings. 35. The apparatus of claim 34, wherein the plurality of concentric rings includes a first ring and a second ring,the substantially annular microwave energy transparent areas of the first ring of have a major linear dimension, andthe substantially annular microwave energy transparent areas of the second ring have a major linear dimension that differs from the major linear dimension of the substantially annular microwave energy transparent areas of the first ring. 36. The apparatus of claim 35, wherein the plurality of concentric rings includes a third ring, andthe substantially annular microwave energy transparent areas of the third ring have a major linear dimension approximately equal to the major linear dimension of the substantially annular microwave energy transparent areas of the first ring. 37. The apparatus of claim 32, wherein the susceptor of the inner heating region and the susceptor projections of the outer region are supported on a microwave energy transparent support layer. 38. The apparatus of claim 37, wherein the microwave energy transparent support layer extends between and underlies the susceptor projections of the outer heating region. 39. The apparatus of claim 32, in combination with the food item, wherein the lowermost surface of the food item is in a facing relationship with the plurality of heating regions. 40. An apparatus for preparing a food item in a microwave oven, the apparatus comprising: a plurality of heating regions for underlying the food item, so that a lowermost surface of the food item is in a facing relationship with the plurality of heating regions, the plurality of heating regions including a central region, a medial region, and a peripheral region, the central region and medial region each comprising a layer of microwave energy interactive material operative for converting at least a portion of impinging microwave energy into thermal energy,wherein the central region includes a plurality of substantially annular microwave energy transparent areas in the layer of microwave energy interactive material, the substantially annular microwave energy transparent areas each being defined by an inner boundary and an outer boundary, wherein the inner boundary and the outer boundary comprise concentric circles, and wherein the inner boundary of each substantially annular microwave energy transparent areas circumscribes a respective portion of the layer of microwave energy interactive material, andthe medial region includes a plurality of substantially circular microwave energy transparent areas in the layer of microwave energy interactive material, the substantially circular microwave energy transparent areas being arranged in tiled configuration around the central region, andthe peripheral region includes a plurality of microwave energy interactive projections comprising microwave energy interactive material, the plurality of microwave energy interactive projections extending outwardly from the layer of microwave energy interactive material of the medial region. 41. The apparatus of claim 40, wherein the plurality of substantially annular microwave energy transparent areas are arranged as a plurality of substantially concentric rings surrounding a centermost substantially annular microwave energy transparent area. 42. The apparatus of claim 41, wherein the central region further includes a plurality of microwave energy transparent areas having a substantially triangular shape, anda plurality of microwave energy transparent areas having a substantially bilobal shape. 43. The apparatus of claim 42, wherein the plurality of substantially concentric rings includes a first ring, a second ring, and a third ring of substantially annular microwave energy transparent areas,the plurality of microwave energy transparent areas having the substantially triangular shape is disposed between the first ring and the second ring of substantially annular microwave energy transparent areas, andthe plurality of microwave energy transparent areas having the substantially bilobal shape is disposed between the second ring and the third ring of substantially annular microwave energy transparent areas. 44. The apparatus of claim 43, wherein the plurality of substantially circular microwave energy transparent areas of the medial region are disposed between the peripheral region and the third ring of substantially annular microwave energy transparent areas of the central region. 45. The apparatus of claim 40, wherein the central region is substantially circular in shape, andthe medial region and the peripheral region are annular in shape. 46. The apparatus of claim 40, wherein the central region, medial region, and peripheral region each have a respective area,the substantially annular microwave energy transparent areas comprise about 25% to about 50% of the area of the central region,the substantially circular microwave energy transparent areas comprise about 75% to about 85% of the area of the medial region, andthe microwave energy interactive projections comprise from about 1% to about 5% of the area of the peripheral region. 47. The apparatus of claim 40, wherein the plurality of heating regions are defined by configuring the layer of microwave energy interactive material on a microwave energy transparent support layer, andthe support layer extends between and underlies the plurality of microwave energy interactive projections of the peripheral region. 48. The apparatus of claim 40, wherein the plurality of heating regions are defined by configuring the layer microwave energy interactive material on a microwave energy transparent support layer, andthe plurality of microwave energy interactive projections of the peripheral region are spaced apart from one another on the microwave energy transparent support layer to define microwave energy transparent areas between the plurality of microwave energy interactive projections. 49. The apparatus of claim 40, in combination with the food item, wherein the food item overlies the plurality of heating regions.
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