Patents by Inventor Hiro Matsuda

Hiro Matsuda 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).

  • Rewritable, heat sensitive, color image recording medium and image recording method using same
    Patent number: 6197460
    Abstract: A rewritable, heat sensitive, color image recording medium having a pair of opposed substrate sheets at least one of which is transparent, and a heat sensitive layer interposed between the substrate sheets and containing a cholesteric liquid crystal compound having a molecular weight of not greater than 2,000 and a glass transition point of at least 35° C. A color image is formed on the recording medium by varying imagewise the temperature of the heat sensitive layer from a first temperature to a second temperature such that the cholesteric liquid crystal compound assumes a cholesteric liquid crystal phase at at least one of the first and second temperatures. The image is fixed by rapidly cooling the recording medium to a temperature lower than the glass transition point of the cholesteric liquid crystal compound.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: March 6, 2001
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Nobuyuki Tamaoki, Alexander Parfenov, Atsushi Masaki, Hiro Matsuda
  • Polydiphenyldiacetylenes
    Patent number: 5196586
    Abstract: Disclosed herein are polydiphenyldiacetylenes having the following repeating unit (III): ##STR1## (wherein R.sup.1 denotes a hydrogen atom or a methoxy group; R.sup.2 denotes a hydrogen atom, a methoxy group or a methylamino group; R.sup.3 denotes a hydrogen atom or a trifluoromethyl group; and R.sup.4 denotes a hydrogen atom or a trifluoromethyl group; provided that R.sup.1 is not a hydrogen atom when R.sup.2 is hydrogen atom, and R.sup.3 is not a hydrogen atom when R.sup.4 is hydrogen atom).
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: March 23, 1993
    Assignees: Toda Kogyo Corp., The Agency of Industrial Science and Technology
    Inventors: Hiro Matsuda, Shuji Okada, Hachiro Nakanishi, Masao Kato, Minoru Ohsugi, Shigeru Takaragi, Nanao Horiishi
  • Method using x-rays to determine thickness of organic films
    Patent number: 5003569
    Abstract: A thickness determination method for organic films comprises the steps of: irradiating an organic film to be measured with x-rays at a certain angle of incidence, finding an angle of reflection at which the x-ray intensity reaches a peak, and finding the thickness of the film from the angle of this peak.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: March 26, 1991
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Shuji Okada, Hiro Matsuda, Hachiro Nakanishi, Masao Kato
  • Diacetylene-nylon salt compound and method for production of two-dimensional macromolecular crystals and shaped articles using said compound
    Patent number: 4904438
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: February 27, 1990
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Hiro Matsuda, Hachiro Nakanishi, Masao Kato, Yoshio Tanaka, Kazuo Nakayama
  • Diacetylene-nylon salt compound and method for production of two-dimensional macromolecular crystals and shaped articles using said compound
    Patent number: 4814404
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: March 21, 1989
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Hiro Matsuda, Hachiro Nakanishi, Masao Kato, Yoshio Tanaka, Kazuo Nakayama
  • Method for production of organic electroconductive crystals
    Patent number: 4624756
    Abstract: Cyanometallophthalocyanine crystals which are organic electroconductive crystals are produced by electrolysis of an electrolyte containing an alkali salt of dicyanometallophthalocyanine. Organic electroconductive crystals of better quality are produced by causing the cyanometallophthalocyanine crystals mentioned above to incorporate therein an electron accepting compound and an electron donating compound as doping substances.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: November 25, 1986
    Assignees: Agency of Industrial Science and Technology, Ministry of International Trade and Industry
    Inventors: Hiro Matsuda, Hachiro Nakanishi, Masao Kato, Yuji Orihashi, Norihisa Kobayashi, Eishun Tsuchida