Patents by Inventor Tatsuo Ito

Tatsuo Ito 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).

  • Common indicator unit for radio receiver and transceiver
    Patent number: 4197504
    Abstract: A common indicator unit for a radio receiver and transceiver includes a segment type indicator consisting of a plurality of digits. An indication output corresponding to the receiving frequency of the radio receiver and an indication output corresponding to the channel of the transceiver are applied to the input terminal of the indicator after selection by switching.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: April 8, 1980
    Assignee: Fujitsu Ten Limited
    Inventor: Tatsuo Ito
  • Process for producing high impact and weather resistant graft copolymers
    Patent number: 4154777
    Abstract: High impact and weather resistant graft copolymers are produced by a two-stage process comprising (I) carrying out bulk or suspension polymerization of a mixture obtained by impregnating a substantially non-polar rubber-like polymer having iodine value of 2 to 40 with a mixture of an aromatic vinyl compound and a polar vinyl compound in the presence of a polymerization initiator to yield a graft copolymer, and (II) subjecting a mixture obtained by dispersing with partly dissolving (or impregnating) the graft copolymer in (or with) a mixture of an aromatic vinyl compound and a polar vinyl compound to bulk, suspension or bulk-suspension polymerization in the presence of a polymerization initiator.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: May 15, 1979
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Fusaji Shoji, Susumu Era, Hisashi Kogame, Tatsuo Ito, Koichi Kakefuda, Kiyoyuki Suzue