Patents by Inventor Tsuneo Yoshinari

Tsuneo Yoshinari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4626947
    Abstract: A thin film magnetic head comprises a lower magnetic member and an upper magnetic film which constitute a magnetic circuit having a magnetic gap at a predetermined location, and a conductor film forming a coil which intersects the magnetic circuit. At least the upper magnetic film has a magnetostriction constant which is not greater than 6.times.10.sup.-7 in the absolute value.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: December 2, 1986
    Assignee: Computer Basic Technology Research Association
    Inventors: Shinji Narishige, Tsuneo Yoshinari, Mituo Sato, Masayuki Takagi, Sadanori Nagaike, Toshihiro Yoshida, Katsuya Mitsuoka
  • Patent number: 4592801
    Abstract: A method of patterning a thin film by dry etching is disclosed in which, in order for a thin alumina film to have a predetermined pattern, the thin alumina film is selectively removed by carrying out the ion beam etching which uses a carbon fluoride gas, while using a photoresist film as a mask.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: June 3, 1986
    Assignee: Computer Basic Technology Research Association
    Inventors: Shinichi Hara, Shinji Narishige, Tsuneo Yoshinari, Mistuo Sato, Katsuya Mitsuoka, Makoto Morijiri, Masanobu Hanazono, Tetsuo Kobayashi
  • Patent number: 4516180
    Abstract: A thin film magnetic head comprises an upper magnetic film and a lower magnetic film which cooperate to constitute a magnetic circuit including a magnetic gap, and a coil conductor film constituting a coil having a predetermined number of turns and extending between the upper and the lower magnetic films to intersect the magnetic circuit. The upper magnetic film is composed of a laminate constituted by magnetic thin film layers and non-magnetic thin film layers stacked alternately with each other. An electrically insulating layer formed of a photo-sensitive resin is interposed between the upper magnetic film and the coil conductor film.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: May 7, 1985
    Assignee: Computer Basic Technology Research Assoc.
    Inventors: Shinji Narishige, Tsuneo Yoshinari, Mituo Sato, Masayuki Takagi, Toshihiro Yoshida