Patents by Inventor Yoshitaka Yoshikawa

Yoshitaka Yoshikawa 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).

  • Print head
    Patent number: 4679054
    Abstract: A print head with elongate electrical conductors and a fixing member containing hexagonal boron nitride, the elongate electrical conductors being embedded in or laminated on the fixing member and exposed at the tips. Electric signals are applied between the conductors and a printing medium to print thereon images corresponding to the electric signals.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: July 7, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshitaka Yoshikawa, Masahide Tsukamoto, Yutaka Nishimura, Hitoshi Ono, Tetsuhiro Sano
  • Resin-bonded graphite body for a dry battery and method of making the same
    Patent number: 4157317
    Abstract: A resin-bonded graphite body having controlled crystalline orientation and a density of at least 2.05 g/cm.sup.3, the body comprising 3 to 12 weight % of a thermosetting resin and 88 to 97 weight % of a carbonaceous powder, is provided which includes at least 50 weight % of natural crystalline graphite powder. The body has a high transverse strength and a very low electrical resistance in the direction parallel to the direction of the crystalline orientation, and is thus suitable for a dry battery electrode.
    Type: Grant
    Filed: January 6, 1978
    Date of Patent: June 5, 1979
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Nagasawa, Tomio Ishida, Yoshitaka Yoshikawa
  • Resin-bonded graphite body for a dry cell
    Patent number: 4094897
    Abstract: A resin-bonded graphite body having controlled crystalline orientation and a density of at least 2.05 g/cm.sup.3, the body comprising 3 to 12 weight % of a thermosetting resin and 88 to 97 weight % of a carbonaceous powder which includes at least 50 weight % of natural crystalline graphite powder, is provided. The body has a high transverse strength and a very low electrical resistance in the direction parallel to the direction of the crystalline orientation, and is thus suitable for a dry battery electrode.
    Type: Grant
    Filed: August 3, 1976
    Date of Patent: June 13, 1978
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Nagasawa, Tomio Ishida, Yoshitaka Yoshikawa