Patents by Inventor Yuudou Abe

Yuudou Abe 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).

  • Film type magnetic recording medium
    Patent number: 4833044
    Abstract: A film type magnetic recording medium comprising as a magnetic recording layer an iron-cobalt-nickel-chromium magnetic alloy containing 10-51 wt. % cobalt, 1-30 wt. % nickel, 1-10 wt. % of chromium and 6 wt. % or less of at least one of the elements molybdenum, tungsten, vanadium, niobium, tantalum, copper, titanium and zirconium, high in durability and magnetic property, and moreover, capable of easily forming a magnetic alloy film thereon by vacuum deposition.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: May 23, 1989
    Assignees: Tohoku Steel Co., Ltd., Canon Kabushiki Kaisha
    Inventors: Minoru Takahashi, Terunobu Miyazaki, Susumu Shinagawa, Yuudou Abe, Yoshinobu Saitou