Fused--Al2O3-MgO-Y2O3 eutectic abrasive particles, abrasive articles, and methods of making and using the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-003/14
B24D-003/00
출원번호
US-0704843
(2000-11-02)
발명자
/ 주소
Rosenflanz, Anatoly Z.
출원인 / 주소
3M Innovative Properties Company
대리인 / 주소
Allen, Gregory D.
인용정보
피인용 횟수 :
21인용 특허 :
98
초록
Fused abrasive particles comprising eutectic material comprising Al2O3--MgO--Y2O3eutectic. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.
대표청구항▼
Fused abrasive particles comprising eutectic material comprising Al2O3--MgO--Y2O3eutectic. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes. ht ventricle area of the heart occurring before or
Fused abrasive particles comprising eutectic material comprising Al2O3--MgO--Y2O3eutectic. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes. ht ventricle area of the heart occurring before or after the second depolarization event. 9. The method of claim 7, wherein the first depolarization event occurs in an atrial area of the heart prior to the second and third depolarization events, the second depolarization event is a QRS complex peak in a left ventricle area of the heart, and the third depolarization event is an onset of a QRS complex in the left ventricle area of the heart occurring before the second depolarization event. 10. The method of claim 7, wherein the first depolarization event is an onset of a QRS complex in a left ventricle area of the heart occurring prior to the second depolarization event, the second depolarization event is a QRS complex peak in the left ventricle area of the heart, and the third depolarization event is a QRS complex peak in a right ventricle area of the heart occurring before or after the second depolarization event. 11. The method of claim 1, wherein the step of determining the lead position comprises the step of: computing a probability (P) of the lead position being in an anterior position according to the equation wherein dAis an approximation of a probability density function of the electrode being in the anterior position, dLis an approximation of a probability density function of the electrode being in a lateral/posterior position, Q* RLis the first interval in milliseconds, and wherein dA=0.001(Q*RL-70)2,and dL=0.001(Q*RL-130)2. 12. The method of claim 1, wherein the step of determining the lead position comprises the step of: computing a probability (P) of the lead position being in an anterior position according to the equation wherein dAis an approximation of a probability density function of the electrode being in the anterior position, dLis an approximation of a probability density function of the electrode being in a lateral/posterior position, RRRLis the first interval in milliseconds, and wherein dA=0.0005(RRRL-20)2,and dL=0.0005(RRRL-80)2. 13. A method for determining a position of an electrode within a left ventricle of a heart, the method comprising the steps of: detecting a first depolarization event within the heart; sensing, with the electrode, a second depolarization event within the heart; measuring a first interval between the first depolarization event and the second depolarization event; detecting a third depolarization event within the heart; measuring a second interval between the third depolarization event and the second depolarization event; and determining the electrode position based on an evaluation of the first and the second intervals. 14. The method of claim 13, wherein the first depolarization event is an onset (Q*) of the QRS complex detected by the electrode prior to the second depolarization event, the second depolarization event is a QRS complex peak (RL) detected by the electrode, and the third depolarization event is a QRS complex peak (RR) detected in a right ventricle region of the heart before or after the second depolarization event. 15. The method of claim 13, wherein the first depolarization event is an atrial activity (A) occurring prior to the second and third depolarization events, the second depolarization event is a QRS complex peak (RL) detected by the electrode, and the third depolarization event is an onset (Q*) of the QRS complex detected by the electrode prior to the second depolarization event. 16. The method of claim 13, wherein the first depolarization event is an atrial activity (A) occurring prior to the second and third depolarization events, the second depolarization event is a QRS complex peak (RL) detected by the electrode, and the third depolarization event is a QRS c omplex peak (RR) detected in a right ventricle region of the heart before or after the second depolarization event. 17. The method of claim 13, wherein the step of determining the lead position based on an evaluation of the first and second intervals comprises the step of: computing a probability (P) of the lead position being in an anterior position according to the equation wherein dAis an approximation of a probability density function of the electrode being in the anterior position, dLis an approximation of a probability density function of the electrode being in a lateral/posterior position, RRRLis the first interval in milliseconds, Q* RLis the second interval in milliseconds, and wherein dA=0.004(Q*RLRL-100)2,and dL=0.004(Q*RL+RRRL-200)2. 18. A system for determining the position of a first electrode in a left ventricle area of a patient's heart, comprising: the first electrode located within the left ventricle area; one or more detection devices for detecting at least first and second electrical events in the patient's heart, one of the one or more detection devices being electrically connected to the first electrode and detecting the second electrical event in the left ventricle area; and a processing device in electrical communication with the one or more detection devices, the processing device configured to calculate a first interval between the first and second electrical events and determine the position of the electrode based at least upon the first interval. 19. The system of claim 18, further comprising a second electrode that is adapted to be positioned in an atrium area of the patient's heart, one of the one or more detection devices being electrically connected to the second electrode and is adapted to detect the first electrical event in the atrium area prior to the detection of the second electrical event, and wherein the second electrical event is a left ventricle QRS complex peak. 20. The system of claim 18, further comprising a second electrode that is adapted to be positioned in a right ventricle area of the patient's heart, one of the one or more detection devices being electrically connected to the second electrode and is adapted to detect the first electrical event in the right ventricle area before or after the detection of the second electrical event, and wherein the first electrical event is a right ventricle QRS complex peak and the second electrical event is a left ventricle QRS complex peak. 21. The system of claim 18, wherein the first electrode detects the first electrical event, the first electrical event being an onset of a left ventricle QRS complex, and wherein the second electrical event is a left ventricle QRS complex peak. 22. A system for determining the position of a first electrode in a left ventricle area of a patient's heart, comprising: means for detecting a first electrical event within the patient's heart; means for detecting a second electrical event occurring at the first electrode; means for computing a first interval between the first and second electrical events; and means for determining whether the first electrode has an anterior or lateral/posterior position within the left ventricle based at least on the first interval between the first and second electrical events. 23. The system of claim 22, wherein the second electrical event is a peak of a QRS complex at the first electrode and the first electrical event is atrial activity. 24. The system of claim 22, wherein the second electrical event is a peak of a QRS complex at the first electrode and the first electrical event is an onset of a QRS complex. 25. The system of claim 22, wherein the second electrical event is a peak of a QRS complex at the first electrode and the first electrical event is a peak of a right ventricle QRS complex
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (98)
Dubots Dominique (Passy FRX) Faure Pierre (St Quentin sur Isere FRX), Abrasive and/or refractory products based on melted and solidified oxynitrides and process preparing the same.
Buchanan Scott J. (Minneapolis) Morrison Eric D. (West St. Paul) Boston David R. (Woodbury) Hedrick Steven T. (Cottage Grove) Kausch William L. (Cottage Grove) Larson Wayne K. (Maplewood MN), Abrasive article having vanadium oxide incorporated therein.
Culler Scott R. (Burnsville MN) Berg Gregory A. (Lindstrom MN) Pieper Jon R. (Lindstrom MN) Olson Richard M. (Stillwater MN), Abrasive articles and methods of making and using same.
Pihl Richard M. (Cottage Grove MN) Hayes Duane J. (Ellsworth WI) Barber ; Jr. Loren L. (Lake Elmo MN) Welygan Dennis G. (Woodbury MN) Hardwick R. Eugene (Maplewood MN) Zemke ; deceased Ronald O. (lat, Abrasive filaments comprising abrasive-filled thermoplastic elastomer, methods of making same, articles incorporating sa.
Pihl Richard M. (Cottage Grove MN) Hayes Duane J. (Ellsworth WI) Barber ; Jr. Loren L. (Lake Elmo MN) Welygan Dennis G. (Woodbury MN) Hardwick R. Eugene (Maplewood MN) Zembke ; deceased Ronald O. (la, Abrasive filaments comprising abrasive-filled thermoplastic elastomer, methods of making same, articles incorporting sam.
Monroe Larry D. (Inver Grove Heights MN) Wood William P. (Minneapolis MN), Abrasive grits formed of ceramic containing oxides of aluminum and rare earth metal, method of making and products made.
Monroe Larry D. (Inver Grove Heights MN) Wood William P. (Minneapolis MN), Abrasive grits formed of ceramic containing oxides of aluminum and yttrium, method of making and using the same and prod.
Cottringer Thomas E. (Niagara Falls CAX) van de Merwe Ronald H. (Niagara Falls CAX) Bauer Ralph (Niagara Falls CAX), Abrasive material and method for preparing the same.
Tamamaki Masahiro (Osaka JPX) Fujii Souichi (Osaka JPX) Suzuki Naruo (Osaka JPX), Ceramic abrasive grains, method of producing the same and abrasive products made of the same.
Hlg Paul (Winterthur CHX) Severus Harald (Schaffhausen CHX), Composite panel that is difficult to combust and produces little smoke, and process for manufacturing same.
Dubots Dominique (Le Fayet FRX) Toulouse Pierre (Chamonix FRX), Electrically melted multiphase material based on alumina and aluminium oxycarbide and oxynitride.
Brothers Jack A. (Big Flats NY) Doman Robert C. (Painted Post NY) McNally Robert N. (Corning NY), Fused abrasive grains consisting essentially of corundum, zirconia and R2O3.
Ueltz Herbert F. G. (Youngstown NY) Dashineau Melvin A. (Niagara Falls NY) Pino James J. (Niagara Falls NY), Fused alumina-zirconia abrasive material formed by an immersion process.
Walker Thomas B. (Lewiston NY) Seider Robert J. (Ransomville NY) Cichy Paul (Buffalo NY), Fused aluminum oxide abrasive grain containing reduced titanium oxide.
Walker Thomas B. (Lewiston NY) Seider Robert J. (Ransomville NY) Cichy Paul (Buffalo NY), Fused aluminum oxide abrasive grain containing reduced titanium oxide.
Walker Thomas B. (Lewiston NY) Seider Robert J. (Ransomville NY) Cichy Paul (Buffalo NY), Fused aluminum oxide abrasive grain containing reduced titanium oxide.
Narayanan Kesh S. (Holden MA) Vagarali Suresh S. (Shrewsbury MA) Swanson Brian E. (Northborough MA), Grinding wheel with combination of fused and sintered abrasive grits.
Daire Marc (Illkirsch-Graffenstaden FRX) Larrere Yves (Strasbourg FRX) Mangin Andre (Annecy FRX), High-hardness abrasive product based on alumina and aluminium oxycarbides and process for preparing same.
Martin Lawrence L. (St. Paul MN) Storer Jonathan (St. Paul MN) Carpenter Michael W. (St. Paul MN), Method of coating alumina particles with refractory material, abrasive particles made by the method and abrasive product.
Benedict Harold W. (Cottage Grove MN) Zimny Diana D. (St. Paul MN) Bange Donna W. (Eagan MN), Method of preparation of a coated abrasive belt with an endless, seamless backing.
Johnson David E. (Ames IA) Mann Lawrence J. (Lake Elmo MN) Mevissen Scott M. (White Bear Lake MN) Pihl Richard M. (Cottage Grove MN) Roeker David C. (Hudson WI), Molded abrasive brush.
Markhoff-Matheny Carole J. (Leicester MA) Hay John (Shrewsbury MA) Rostoker David (Sturbridge MA), Nitrified bonded sol gel sintered aluminous abrasive bodies.
Holmes Gary L. (Vadnais Heights MN) Culler Scott R. (Burnsville MN) Hardy David H. (New Richmond WI) Harmon Kimberly K. (Hudson WI) Heiti Robert V. (Hudson WI) Hendrickson William A. (St. Joseph WI) , Precisely shaped particles and method of making the same.
Greskovich Charles D. (Schenectady NY) Minnear William P. (Schenectady NY) Brun Milivoj K. (Ballston Lake NY) Riedner Robert J. (Waukesha WI), Preparation of high uniformity polycrystalline ceramics by presintering, hot isostatic pressing and sintering and the re.
Ashley Peter J. (Madison AL) Hill Larry (Niagara Falls CAX) Knapp Christopher E. (Grimsby CAX) Demers Rene G. (Niagara Falls CAX) Batchelor D. C. (Lacey\s Spring AL), Process for quenching molten ceramic material.
Jayan Ponnarassery Sukumaran,INX ; Ananthaseshan Narayanan,INX ; Subramaniam Balachandran,INX ; Murugappan Murugappan Vellayan,INX, Process for the preparation of alumina abrasives.
Bockstiegel Gerd-Edzard (Troisdorf DT) Neidhardt Manfred (Siegburg DT) Rehfeld Gerhard (Aachen DT) Umlauf Werner (Niederkassel DT), Process for the preparation of granulated abrasives from fused or sintered refractory inorganic hard substances having a.
Berg Todd A. (Louis Park) Rowenhorst Donley D. (Maplewood) Berg James G. (Lino Lakes MN) Leonard William K. (River Falls WI), Shaped abrasive particles and method of making same.
Pellow Scott W. (Niagara Falls CAX) Trischuk Ronald W. (Niagara Falls CAX) Knapp Christopher E. (Hamilton CAX) Bauer Ralph (Niagara Falls CAX), Sintered alumina-zirconia ceramic bodies.
Pieper Jon R. (Lindstrom MN) Olson Richard M. (Stillwater MN) Mucci Michael V. (Hudson WI) Holmes Gary L. (Vadnais Heights MN) Heiti Robert V. (St. Paul MN), Structured abrasive article.
Lee Ken W. (Holden MA) Rue Charles V. (Petersham MA), Vitrified bonded grinding wheel with mixtures of sol gel aluminous abrasives and silicon carbide.
Panzarella, Tracy H.; Yener, Doruk O., Abrasive articles including abrasive particulate materials, coated abrasives using the abrasive particulate materials and methods of forming.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.