Patents by Inventor Takahiro Kawagoe

Takahiro Kawagoe 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).

  • Patent number: 4939050
    Abstract: An electric cell comprising a positive electrode, a negative electrode, and an electrolyte maintains excellent performance when the positive electrode is an electro-conductive polymer composite including a mesh stainless steel having a wire diameter of about 35-120 .mu.m and an electro-conductive polymer, typically polyaniline, integrally deposited onto the mesh by electrolytic polymerization. A container having the elements received therein is provided with a vent mechanism.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: July 3, 1990
    Assignees: Bridgestone Corporation, Seiko Electronic Components, Ltd.
    Inventors: Shinichi Toyosawa, Isamu Shinoda, Katsuhiko Arai, Toyoo Harada, Yuko Maeda, Hideharu Daifuku, Shigeru Kijima, Kinya Suzuki, Yoshitomo Masuda, Masao Ogawa, Takahiro Kawagoe, Tadashi Fuse, Tetsuro Amano
  • Patent number: 4906538
    Abstract: A non-aqueous secondary cell comprising a positive electrode, a negative electrode and a non-aqueous electrolyte is provided wherein the positive electrode comprises as an active material polyaniline containing 15 to 30% by weight of BF.sub.4.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: March 6, 1990
    Assignee: Bridgestone Corporation
    Inventors: Shinichi Toyosawa, Shigeru Kijima, Hideharu Daifuku, Yuko Maeda, Katsuhiko Arai, Takahiro Kawagoe
  • 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
  • Patent number: 4865932
    Abstract: An electric cell comprising a positive electrode, a negative electrode, and an electrolyte containing a lithium salt is provided wherein the negative electrode has a two-layer structure of a lithium-aluminum alloy layer and an aluminum layer. The cell is fabricated by placing a positive electrode, a negative electrode, and an electrolyte in a cell container comprising positive and negative electrode casings, and forming a seal between the positive and negative electrode casings. The negative electrode is electrochemically formed in situ in the cell container from a lithium-clad aluminum substrate.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: September 12, 1989
    Assignees: Bridgestone Corporation, Seiko Electronic Components Ltd.
    Inventors: Yoshitomo Masuda, Isamu Shinoda, Masao Ogawa, Toyoo Harada, Takao Ogino, Kazuo Takayama, Tadaaki Miyazaki, Takahiro Kawagoe
  • Patent number: 4863817
    Abstract: In a nonaqueous electrolyte cell comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte containing an alkali metal ion, an electrolytic manganese dioxide which is prepared by subjecting a manganese dioxide-forming electrolytic solution to electrolysis while introducing a gas therein is used as an active material for the positive electrode.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: September 5, 1989
    Assignee: Bridgestone Corporation
    Inventors: Takao Ogino, Tadaaki Miyazaki, Takahiro Kawagoe, Masaki Yoshio
  • 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
  • Patent number: 4803137
    Abstract: A non-aqueous electrolyte secondary cell is provided which comprises a positive electrode active material of a modified vanadium pentoxide, a negative electrode active material of lithium or lithium alloy, and a non-aqueous electrolyte.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: February 7, 1989
    Assignee: Bridgestone Corporation
    Inventors: Tadaaki Miyazaki, Takao Ogino, Yoshitomo Masuda, Takahiro Kawagoe
  • Patent number: 4214058
    Abstract: A vulcanizable rubber composition having an excellent adhesive property when vulcanized in contact with metals is obtained by compounding(a) 100 parts by weight of a raw rubber(b) from 0.5 to 10 parts by weight of a vulcanizing agent, and(c) from 0.01 to 1 part by weight (as metal content) of at least one metal compound selected from the class consisting of organic acid salts of titanium and molybdenum and organic complex compounds of titanium, molybdenum and cobalt.The vulcanizable rubber composition thus obtained is not susceptible to the oxidative deterioration in unvulcanized state during the storage.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: July 22, 1980
    Assignee: Bridgestone Tire Company
    Inventors: Takaaki Imamura, Takahiro Kawagoe, Toshio Chikaraishi, Takashi Nyomura
  • Patent number: 4006113
    Abstract: A novel coating composition can be obtained by compounding 100 parts by weight of (A) acetylene-conjugated random copolymer having an acetylene unit content of 5-60 mol% and a block character P of 0.8-1.2 and 5-1,000 parts by weight of (B) carbon-carbon double bond-containing compound. The resulting coating composition shows a rapid curing velocity, which has never been seen, and provides an excellent coating film.When the above described composition is added with (C) a curing promoter or a radical initiator, the curing velocity is more increased and when the above described composition is added with (D) a filler or a pigment, excellent coating films suitable for various applications can be formed.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: February 1, 1977
    Assignee: Bridgestone Tire Company Limited
    Inventors: Junji Furukawa, Eiichi Kobayashi, Takahiro Kawagoe
  • Patent number: 3970608
    Abstract: An epoxidized acetylene-conjugated diene random copolymer, of which epoxy equivalent is within the range of from 50 to 1,000, is obtained by epoxidizing an acetylene-conjugated diene random copolymer, in which acetylene and conjugated diene are bonded linearly and randomly, the block character P is within the range of from 0.8 to 1.2 and the acetylene content is less than 60 mol%, with an organic peracid. The epoxidized acetylene-conjugated diene random copolymer is more reactive than the crude random copolymer and yields an excellent film, a coating material or a shaped article. Further by adding some of curing agents to the epoxidized acetylene-conjugated diene random copolymer, the cure rate of the epoxidized copolymer is fairly enhanced.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: July 20, 1976
    Assignee: Bridgestone Tire Company Limited
    Inventors: Junji Furukawa, Eiichi Kobayashi, Takahiro Kawagoe