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Electro-magnetic interference shield for a telephone handset 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-001/38
  • H01Q-001/52
출원번호 US-0688862 (1996-07-31)
발명자 / 주소
  • Spann Charles L.
  • Lynch Michael J.
출원인 / 주소
  • Northern Telecom Limited, CAX
대리인 / 주소
    Foley & Lardner
인용정보 피인용 횟수 : 51  인용 특허 : 7

초록

An electromagnetic interference (EMI) shield for a handheld cellular phone that is particularly useful for shielding a hearing aid against EMI from the phone's antenna. The device includes a base and a flap laminated with a metallic shielding. The base attaches to the receiver end of the cellular ph

대표청구항

[ What is claimed is:] [1.] A device for providing an electromagnetic interference (EMI) protected zone comprising:a base for attachment to a hand-held cellular telephone;a flap comprising a metallic shielding laminated material; andmeans for coupling said flap to said base for allowing displacement

이 특허에 인용된 특허 (7)

  1. Chen Jinyuan (2225 S. Bountiful Blvd. Bountiful UT 84010) Wu Ding (975 E. 400 South ; Apt. 12 Salt Lake City UT 84102), Cellular telephone RF radiation ameliorating device.
  2. Katz Joseph M. (11 Meadow Rd. Old Westbury NY 11568), Cellular telephone users protective device.
  3. Schwanke Jurgen H. (35 Rodeo Ave. ; #4 Sausalito CA 94965), Electromagnetic shield for cellular telephone.
  4. Gorenz ; Jr. Harold J. (Lisle IL) Hasler Jeffery P. (Schaumburg IL) Mudra James R. (Cary IL) Schulz Gary D. (Cary IL), One piece open and closable metal RF shield.
  5. Owerko John R. (Raton NM), Portable transmitter enclosure.
  6. Oxley L. Thomas (2525 Hoffman La. Riverwoods IL 60015), Radiation shield.
  7. Hunt James R. (Cocoa FL), Radiation shield for cellular telephones.

이 특허를 인용한 특허 (51)

  1. Zwick, David J.; Packer, Malcolm, Antenna system for a portable communications device.
  2. Korisch, Ilya A.; Sumetsky, Michael, Apparatus for local reduction of electromagnetic field using an active shield and method thereof.
  3. Tashjian, Richard, Cellular shield case with twistable cover.
  4. Ghosh, Prosenjit; Thakkar, Shreekant Suryakant; Phan, Truong V., Convertible and detachable laptops.
  5. Ghosh,Prosenjit; Thakkar,Shreekant Suryakant; Phan,Truong V., Convertible and detachable laptops.
  6. Joo, Won Seok, Cover for a mobile device and mobile device having same.
  7. Nash, Michael J., Data signal blocking personal communication device holder.
  8. Nash, Michael, Data transmission blocking holder.
  9. Nash, Michael, Data transmission blocking holder for personal data transmitting and receiving devices.
  10. Johnson, Gregory F., Device and method of use for reducing hearing aid RF interference.
  11. Kerimovska, Nercivan; Klinghult, Gunnar; Tomasson, Anna, Device for generating speech, apparatus connectable to or incorporating such a device, and computer program product therefor.
  12. Sepponen Raimo Erik,FIX, Device for radio communication.
  13. Neergaard,Per Jan; Madsen,Karsten Frank Rye; Zweidorff,Hannah B.; Bozzini,Ren��, Device for shielding electronic units including a transmitting/receiving equipment, and especially for shielding mobile phones.
  14. Bayrami Fred, Dual purpose flip shield for retro-fit to an existing hand-held cellular phone.
  15. Brown,Larry K., Electromagnetic shielding system.
  16. Chi-Yun Liu TW, Electromagnetic wave shield pad for mobile phone.
  17. Morisawa, Rui, Headphone.
  18. Zurek, Robert A.; Isabelle, Scott K.; Kelley, Scott D.; Wieczorek, Alfred B., Hearing aid compatibility mode switching for a mobile station.
  19. Zhu, Lizhong; Mankaruse, George Soliman; Corrigan, Michael Stephen, Hearing aid having improved RF immunity to RF electromagnetic interference produced from a wireless communications device.
  20. Zhu, Lizhong; Mankaruse, George; Corrigan, Michael, Hearing aid having improved RF immunity to RF electromagnetic interference produced from a wireless communications device.
  21. Zhu, Lizhong; Mankaruse, George; Corrigan, Michael, Hearing aid having improved RF immunity to RF electromagnetic interference produced from a wireless communications device.
  22. Eaton, Anthony M.; Ruzicka, Jerome C., Hearing aid systems.
  23. Eaton, Anthony M.; Ruzicka, Jerome C., Hearing aid systems.
  24. Eaton, Anthony M.; Ruzicka, Jerome Charles, Hearing aid systems.
  25. Wilz Leo J., Hybrid printed circuit board shield and antenna.
  26. Herr Wang CN, Mobile phone.
  27. Herr Wang CN, Mobile phone.
  28. Shoji,Hideaki; Katsura,Takatoshi; Matsunami,Yoshinori; Imanishi,Yasuhito; Tanaka,Tetsuya; Taketomi,Hirokazu, Mobile terminal including first and second housings and an antenna.
  29. Shoji,Hideaki; Katsura,Takatoshi; Matsunami,Yoshinori; Imanishi,Yasuhito; Tanaka,Tetsuya; Taketomi,Hirokazu, Mobile terminal including first and second housings and an antenna.
  30. Qi, Yihong; Jarmuszewski, Perry; Man, Ying Tong, Mobile wireless communications device with slidable configuration providing hearing aid compatibility features and related methods.
  31. Qi, Yihong; Jarmuszewski, Perry; Man, Ying Tong, Mobile wireless communications device with slidable configuration providing hearing aid compatibility features and related methods.
  32. Qi, Yihong; Jarmuszewski, Perry; Man, Ying Tong, Mobile wireless communications device with slidable configuration providing hearing aid compatibility features and related methods.
  33. Johnson,Greg, Oriented PIFA-type device and method of use for reducing RF interference.
  34. Brown, Michael, Phone support apparatus.
  35. Bye, Gordon J.; Erdahl, Jeffrey C.; Preves, David A., Portable hearing-related analysis system.
  36. Hagen, Lawrence T.; Preves, David A.; Newton, James; Richardson, Garry, Portable system for programming hearing aids.
  37. Hagen,Lawrence T.; Preves,David A., Portable system for programming hearing aids.
  38. Hagen, Lawrence T.; Preves, David A., Portable system programming hearing aids.
  39. Wong, Alfred Y., Portable telephone with directional transmission antenna.
  40. Ghosh,Prosenjit, Positioning mechanism for a pen-based computing system.
  41. Ghosh,Prosenjit, Positioning mechanism for a pen-based computing system.
  42. Zhou, Guangping; Tsai, Allen Ting; Yildirim, Bahadir Suleyman, Radiation shielding tri-band antenna adapted to provide dual band polarizations.
  43. Lungley, Andrew T., Radiation-shielding mobile phone case device.
  44. Kim R. Kunz ; Frederick J. Wood, Radio frequency radiation shield unit for wireless telephones.
  45. Dag Johan Fredrik Martensson SE; Hans Kenneth Hakansson SE; Zhinong Ying SE, Radio telephone with high antenna efficiency.
  46. Frenzer, Michael W.; Zurek, Robert A., Reduction of magnetic field noise via management of current draw from a power source.
  47. Frerking, Melvin Duane, System and method for optimizing the strength and orientation of the inductive field of a hearing aid compatible device.
  48. Frerking,Melvin Duane, System and method for optimizing the strength and orientation of the inductive field of a hearing aid compatible device.
  49. Armitage, Scott T., System for programming hearing aids.
  50. Marshall, Leo, Telephone mouthpiece shield assembly.
  51. Newton, James; Seel, Mark; Müllenborn, Matthias; Sørensen, Per Kokholm; Richardson, Garry, Wireless interface for programming hearing assistance devices.
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