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[미국특허] High coercivity rare earth-iron magnets 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C22C-033/00
출원번호 US-0274070 (1981-06-16)
발명자 / 주소
  • Croat John J. (Sterling Heights MI)
출원인 / 주소
  • General Motors Corporation (Detroit MI 02)
인용정보 피인용 횟수 : 46  인용 특허 : 6

초록

Ferromagnetic compositions having intrinsic magnetic coercivities at room temperature of at least 1,000 Oersteds are formed by the controlled quench of molten rare earth-transition metal alloys. Hard magnets may be inexpensively formed from the lower atomic weight lanthanide elements and iron.

대표청구항 ▼

A method of making an alloy with permanent magnetic properties at room temperature comprising the steps of forming a mixture of iron and one or more rare earth elements; heating said mixture to form a homogeneous molten alloy; and quenching said molten alloy at a rate such that it solidifies substan

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

  1. Bedell John R. (Sparta NJ), Chill roll casting of continuous filament.
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  2. Narasimhan Mandayam C. (Flanders NJ), Continuous casting method for metallic strips.
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  3. Imamura Nobutake (Meguro JPX) Mimura Yoshinori (Tachikawa JPX) Kobayashi Toshihiko (Mitaka JPX), Magneto-optical memory medium.
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  4. Frischmann Peter G. (Scotia NY), Molded amorphous metal electrical magnetic components.
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  5. Menth Anton (Nussbaumen CHX) Nagel Hartmut (Wettingen CHX) Spinner Ulrich (Aeugst CHX), Permanent-magnet alloy.
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  6. Savage Howard T. (Greenbelt MD) Clark Arthur E. (Adelphi MD) McMasters O. Dale (Ames IA), Rare earth-iron magnetostrictive materials and devices using these materials.
    상세보기

이 특허를 인용한 특허 (46) 인용/피인용 타임라인 분석

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  4. Yamamoto Kazuhiko (Kobe JPX) Miyake Yuichi (Kasai JPX) Okada Chikara (Kobe JPX), Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magn.
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  5. Yamamoto Kazuhiko (Kobe JPX) Miyake Yuichi (Kasai JPX) Okada Chikara (Kobe JPX), Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magn.
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  6. Chatterjee Dilip K. (Rochester NY), Anisotropic high energy magnets and a process of preparing the same.
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  7. Blume ; Jr. Walter S. (Cincinnati OH) Blume ; III Walter S. (Amelia OH), Bonded high energy rare earth permanent magnets.
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  8. Zhou, Chen; Pinkerton, Frederick E.; Herbst, Jan F., Cerium-iron-based magnetic compounds.
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  9. Cwycyshyn Walter (Harsens Island MI) Kudwa Frank J. (Warren MI), Clutch for robot or like.
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  10. Shimotomai Michio (Chiba JPX) Fukuda Yasutaka (Chiba JPX) Fujita Akira (Chiba JPX), Corrosion resistant rare earth metal magnet.
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  11. Hovanky,Thao D.; Washington,Richard G., Electromagnetic circuit and servo mechanism for articulated cameras.
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  12. Grant Dale A. (Marinette WI), Electromagnetic valve operator.
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  13. Chen, Zhongmin; Smith, Benjamin R.; Ma, Bao-Min; Herchenroeder, James W., Highly quenchable Fe-based rare earth materials for ferrite replacement.
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  14. Chen,Zhongmin; Smith,Benjamin R.; Ma,Bao Min; Herchenroeder,James W., Highly quenchable Fe-based rare earth materials for ferrite replacement.
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  15. Laskaris Evangelos T. ; Barber William D. ; van Oort Johannes M ; Aksel Bulent ; Thompson Paul S. ; Ogle Michele D., Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles.
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  16. Laskaris Evangelos T. ; Barber William D. ; Aksel Bulent ; Ranze Richard A., Laminate tiles for an MRI system and method and apparatus for manufacturing the laminate tiles.
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  17. Bogatin Yakov (Philadelphia PA), Magnetic alloy compositions and permanent magnets.
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  18. Ono, Yoshiki; Kurihara, Tatsuya; Sato, Shigemi; Oki, Sumikazu, Magnetic marker and manufacturing method therefor.
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  19. McGrath Thomas M. (Miami FL) Tilles Arno W. (Hollywood FL), Magnetic treatment of fluids.
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  20. Strasik, Michael, Mechanical improvement of rare earth permanent magnets.
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  21. Sharma Ram A. (Troy MI), Metallothermic reduction of rare earth chlorides.
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  22. Laskaris, Evangelos Trifon; Thompson, Paul Shadforth; Li, Liang; Amm, Kathleen Melanie; Aksel, Bulent; Palmo, Jr., Michael Anthony, Method and apparatus for magnetizing a permanent magnet.
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  23. Laskaris,Evangelos Trifon; Li,Liang; Amm,Kathleen Melanie; Shei,Juliana Chiang; Aksel,Bulent; Benz,Mark Gilbert; Kliman,Gerald Burt; Thompson,Paul Shadworth; Jacobs,Israel Samson; Patchen,Harold Jay, Method and apparatus for magnetizing a permanent magnet.
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  24. Laskaris,Evangelos Trifon; Thompson,Paul Shadforth; Li,Liang; Amm,Kathleen Melanie; Aksel,Bulent; Palmo, Jr.,Michael Anthony, Method and apparatus for magnetizing a permanent magnet.
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  25. Alson Erwin A. (Fraser MI) VanSteenkiste Thomas H. (Washington MI), Method for enhancing magnetic properties of rare earth permanent magnets.
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  26. Haverstick Jerry E. (Muncie IN), Method for making flakes of RE-Fe-B type magnetically aligned material.
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  27. Brewer Earl G. (Warren MI) Lee Robert W. (Troy MI) Croat John J. (Noblesville IN), Method for producing anisotropic RE-FE-B type magnetically aligned material.
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  28. Laskaris, Evangelos T.; Barber, William D.; Aksel, Bulent; Thompson, Paul S.; Ogle, Michele D., Method of making a pole piece for an MRI.
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  29. Chatterjee Dilip K. (Rochester NY), Method of making anisotropic magnets.
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  30. Chatterjee Dilip K. (Rochester NY), Method of making fully dense anisotropic high energy magnets.
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  31. Shigemoto, Yasutaka; Hirosawa, Satoshi, Method of making iron base magnetic material alloy powder.
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  32. Evangelos T. Laskaris ; William D. Barber ; Johannes M van Oort ; Bulent Aksel ; Paul S. Thompson ; Michele D. Ogle, Mold for bonding MRI pole piece tiles and method of making the mold.
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  33. Amm,Kathleen Melanie; Laskaris,Evangelos Trifon; Thompson,Paul Shadforth; Aksel,Bulent; Amm,Bruce Campbell; Palmo, Jr,Michael Anthony; Van Oort,Johannes Martinus; Huang,Xianrui, Multiple ring polefaceless permanent magnet and method of making.
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  34. Ichiryu Takaharu (Ohtsu JPX) Ono Yoshiki (Ohtsu JPX) Ishihara Hideaki (Ohtsu JPX), Novel metal fiber and process for producing the same.
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  35. Laskaris, Evangelos Trifon; Palmo, Michael Anthony; Amm, Kathleen Melanie; Thompson, Paul Shadforth, Permanent magnet assembly and method of making thereof.
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  38. Laskaris,Evangelos Trifon; Palmo,Michael Anthony; Amm,Kathleen Melanie; Thompson,Paul Shadforth, Permanent magnet assembly and method of making thereof.
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  39. Huang,Xianrui; Laskaris,Evangelos Trifon; Amm,Kathleen Melanie; Amm,Bruce Campbell; Palmo, Jr.,Michael Anthony, Permanent magnet assembly with movable permanent body for main magnetic field adjustable.
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  41. Nomura, Tadao; Nagata, Hiroaki; Minowa, Takehisa, Rare earth magnet and its preparation.
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  42. Nomura, Tadao; Nagata, Hiroaki; Minowa, Takehisa, Rare earth magnet and its preparation.
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  43. Rabin Barry H. ; Sellers Charles H., Rare earth permanent magnet and method for making same.
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  44. Li, Hongwei; Luo, Yang; Yu, Dunbo; Li, Kuoshe; Yan, Wenlong; Li, Shipeng; Yuan, Yongqiang; Peng, Haijun, Rare-earth permanent magnetic powder, bonded magnet containing thereof and device using the bonded magnet.
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  45. Yamashita Fumitoshi (Ikoma JPX) Wada Masami (Osaka JPX) Kitayama Shuichi (Osaka JPX), Resin-bonded magnet comprising a specific type of ferromagnetic powder dispersed in a specific type of resin binder.
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  46. 65906 ; 19870500 ; Jervis, Sheet magnet having microcrystalline structure and method of manufacturing the same, and method of manufacturing isotropic permanent magnet powder.
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