Patents by Inventor Tetsuo Katata

Tetsuo Katata 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).

  • Tape reel
    Patent number: 4226381
    Abstract: A tape reel comprising a lower reel member consisting of a disc-like portion and a hub which are designed as an integral part, protrusions having claw-like heads formed on the end surface of said hub and a disc-like upper reel member, whereby said upper and lower reel members can be assembled and fixed to each other by fitting the protrusions formed on the hub into the holes formed in said upper reel member.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: October 7, 1980
    Assignee: Dai-Ichi Seiko Co., Ltd.
    Inventor: Tetsuo Katata
  • Cassette tape reel
    Patent number: 4213578
    Abstract: A cassette tape reel comprising a hub having a cut portion which is narrow at the entrance portion and wide at the inner portion and a tape locking piece having an elliptic section, the cassette tape reel being arranged to fasten the tape by placing the tape in the cut portion of the hub and, then, inserting the tape locking piece to the cut portion and turning it therein, the cassete tape reel being arranged so that the tape is fastened more strongly when a force is applied to the tape.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: July 22, 1980
    Assignee: Dai-Ichi Seiko Co., Ltd.
    Inventor: Tetsuo Katata