Patents by Inventor Shinichi Toyosawa

Shinichi Toyosawa 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).

  • Polyaniline
    Patent number: 4904553
    Abstract: A polyaniline is highly conductive and less corrosive when it contains up to 7 mol % of benzenoid-ammonium salt state and up to 25 mol % of quinoid-diimine state, based on the total molar amount of the polyaniline.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: February 27, 1990
    Assignee: Bridgestone Corporation
    Inventors: Tadashi Nakajima, Shinichi Toyosawa, Shigeru Kijima, Katsuhiko Arai, Yuko Maeda, Masao Ogawa, Takahiro Kawagoe, Yasuhiro Iino, Ryuzo Osawa, Yuichi Ishino
  • Electric cell comprising a polymeric material film electrode having a collection integrated therewith
    Patent number: 4824745
    Abstract: In an electrochemical cell comprising a positive electrode, a negative electrode, and an electrolyte, a film of electroconductive polymeric material having a conductor embedded therein at approximately the mid point of the film is used as an electrode active material and a collector associated therewith.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: April 25, 1989
    Assignees: Bridgestone Corporation, Seiko Electronic Components Ltd.
    Inventors: Masao Ogawa, Toyoo Harada, Shinichi Toyosawa, Isamu Shinoda, Takahiro Kawagoe, Hideharu Daifuku, Yoshitomo Masuda
  • Electric cells utilizing polyaniline as a positive electrode active material
    Patent number: 4717634
    Abstract: An electric cell comprises a positive electrode, a negative electrode and an electrolytic solution, characterized in that a positive active material of the positive electrode is a polyaniline, a negative electrode active material of the negative electrode is lithium or a lithium alloy containing 4.times.10.sup.-3 to 170.times.10.sup.-3 mol of effective lithium which is capable of electrochemical occlusion and release upon charging and discharging per g of the polyaniline used as the positive electrode active material, and said electrolytic solution is an non-aqueous electrolytic solution containing an electrolyte of more than 1 mol/l to less than 6 mol/l in a non-aqueous solvent.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: January 5, 1988
    Assignee: Bridgestone Corporation
    Inventors: Hideharu Daifuku, Tadashi Fuse, Masao Ogawa, Yoshitomo Masuda, Shinichi Toyosawa, Ryota Fujio