Patents by Inventor Toyoaki Takayasu

Toyoaki Takayasu 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).

  • Magnetic head and method of making the same
    Patent number: 4595964
    Abstract: A magnetic head for tape recording and/or reproducing is composed of a pair of abutting thin magnetic metal cores with front and back gaps therebetween, and a pair of magnetic oxide cores sandwiching each of the magnetic metal cores therebetween. The magnetic oxide cores include bodies of glass disposed adjacent the front gap and sandwiching each magnetic metal core to allow the front gap to be visually checked for its depth. To fabricate such a magnetic head, magnetic oxide cores are bonded to a thin magnetic metal core, and the bonded block is cut off across the magnetic metal core to form two block pieces. Each of the block pieces is provided with bodies of glass in recesses formed in a cut surface thereof. After the cut surfaces have been ground, the block pieces are bonded with the cut surfaces confronting each other while keeping the magnetic metal cores in alignment.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: June 17, 1986
    Assignee: Victor Company of Japan, Limited
    Inventors: Kazuo Kimura, Kunihide Sakai, Chikara Inoue, Hiroyuki Hayashi, Toyoaki Takayasu, Yasuhiro Ayabe, Kayoko Miyake