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특허 상세정보

Method of manufacturing a magnetic core half

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G11B-005/147    G11B-005/42   
미국특허분류(USC) 360/126 ; 29/603
출원번호 US-0826192 (1992-01-21)
우선권정보 JP-0175157 (1987-07-14); JP-0194893 (1987-08-04)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 16  인용 특허 : 0
초록

A magnetic head comprises a pair of magnetic core halves, heat-resistant thin films and ferromagnetic thin films, the pair of magnetic core halves being opposed to each other through a non-magnetic material such as SiO2 to form a magnetic gap. The magnetic core halves are made of a ferromagnetic oxide such as ferrite and have gap forming faces to be opposed to each other to form the magnetic gap. The gap forming faces are etched by phosphoric acid solution and then purified by reverse sputtering, so that a grown crystal of the ferromagnetic oxide is expo...

대표
청구항

A method of manufacturing a magnetic core half in a magnetic head having a magnetic gap between a pair of said magnetic core halves opposed to each other through a non-magnetic material, a vicinity of said magnetic gap including ferromagnetic metal material, said method comprising the steps of: preparing a magnetic core half member made of a ferromagnetic oxide and having a gap forming face to be opposed to form said magnetic gap; treating said gap forming face to cause said gap forming face to have an appearance exposing a grown crystal of said ferromag...

이 특허를 인용한 특허 피인용횟수: 16

  1. Lee Robert Arthur,AUX. Diffractive device for generating one or more diffracting images including a surface relief structure at least partly. USP1998105825547.
  2. Hosozawa Takashi,JPX ; Umezane Kazuhiro,JPX. Gap-providing ferrite core half and method for producing same. USP1998105816894.
  3. Hosozawa Takashi,JPX ; Umezane Kazuhiro,JPX. Gap-providing ferrite core half and method for producing same. USP2001056232864.
  4. Watanabe Toshinori (Koide-machi JPX) Koike Fumihito (Nagaoka JPX) Saito Masamichi (Koide-machi JPX). Magnetic head and method of producing the same. USP1997105675460.
  5. Saito Masamichi,JPX ; Watanabe Toshinori,JPX ; Sato Kiyoshi,JPX ; Kuriyama Toshihiro,JPX. Magnetoresisitive sensor and manufacturing method therefor. USP2001036198378.
  6. Saito, Masamichi; Watanabe, Toshinori; Kuriyama, Toshihiro. Magnetoresistive head using exchange anisotropic magnetic field with an antiferromagnetic layer. USP200302RE37992.
  7. Saito Masamichi,JPX ; Watanabe Toshinori,JPX ; Sato Kiyoshi,JPX ; Kuriyama Toshihiro,JPX. Magnetoresistive sensor manufacturing method. USP1999105972420.
  8. Masamichi Saito JP; Toshinori Watanabe JP; Toshihiro Kuriyama JP. Manufacturing method for magnetoresistive head having an antiferromagnetic layer of PTMN. USP200208RE37819.
  9. Saito Masamichi,JPX ; Watanabe Toshinori,JPX ; Sato Kiyoshi,JPX ; Kuriyama Toshihiro,JPX. Method for manufacturing magnetoresistive sensor. USP2000096112402.
  10. Prabucki,Robert W.. Portable bottled water dispenser. USP2009027490739.
  11. Prabucki,Robert W.. Portable bottled water dispenser. USP2008027328818.
  12. Gaud Pierre,FRX ; Sibuet Henri,FRX ; Louis Christine,FRX ; Vallet Nathalie,FRX. Process for producing a vertical magnetic head. USP2001016167611.
  13. Hasegawa Naoya,JPX ; Saito Masamichi,JPX ; Makino Akihiro,JPX. Spin-valve magnetoresistive Sensor including a first antiferromagnetic layer for increasing a coercive force and a second antiferromagnetic layer for imposing a longitudinal bias. USP2001096295186.
  14. Naoya Hasegawa JP; Masamichi Saito JP; Akihiro Makino JP. Spin-valve magnetoresistive sensor including a first antiferromagnetic layer for increasing a coercive force and a second antiferromagnetic layer for imposing a longitudinal bias. USP2002126496338.
  15. Ohtsuka Yoshinori,JPX ; Toda Junzo,JPX. Thin film inductive head and magnetic writing/reading drive including the same. USP1998065774308.
  16. Gaud Pierre,FRX ; Sibuet Henri,FRX ; Louis Christine,FRX ; Vallet Nathalie,FRX. Vertical magnetic head having first and second magnetic materials in specific shapes. USP1999035883765.