Patents by Inventor Yoshimi Suwa

Yoshimi Suwa 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).

  • THERMOPLASTIC RESIN COMPOSITION, OPTICAL FILM AND RETARDATION FILM
    Publication number: 20090209705
    Abstract: Each of the thermoplastic resin composition and the optical film of the present invention comprises a cycloolefin-based polymer (A) and a vinyl-based polymer (B) having a structural unit derived from p-isopropenylphenol. The thermoplastic resin composition and the optical film exhibit excellent compatibility of their components with keeping property of low birefringence inherent in the thermoplastic resin composition comprising the cycloolefln-based polymer and the vinyl-based polymer, and they are excellent in weathering resistance and heat resistance.
    Type: Application
    Filed: September 22, 2005
    Publication date: August 20, 2009
    Applicant: JSR CORPORATION
    Inventors: Motoki Okaniwa, Yoshikazu Miyamoto, Ichiro Kajiwara, Yoshimi Suwa, Nobuyuki Miyaki, Naoyuki Kawashima
  • METAL HYDRIDE COMPLEX, METHOD OF HYDROGENATING RING-OPENING POLYMERIZATION POLYMER OF CYCLOOLEFIN, AND PROCESS FOR PRODUCING PRODUCT OF HYDROGENATION OF RING-OPENING POLYMERIZATION POLYMER OF CYCLOOLEFIN
    Publication number: 20090176950
    Abstract: A metal hydride complex of the invention is a hydride complex of a metal selected from the group consisting of ruthenium, rhodium, osmium and iridium and has one or more aromatic carboxylic acid residues. According to the invention, there is provided a new metal hydride complex which is dissolved in an organic solvent having a low polarity such as a hydrocarbon solvent at a high concentration and has a high catalytic activity of hydrogenating carbon-carbon double bonds. The metal hydride complex relating to the invention is especially suitable as a catalyst in the hydrogenation reaction of a cycloolefin ring-opening polymer.
    Type: Application
    Filed: May 24, 2006
    Publication date: July 9, 2009
    Applicant: JSR CORPORATION
    Inventors: Kohei Katsuda, Seiji Fukuhara, Yoichiro Maruyama, Motoki Okaniwa, Hiraku Shibata, Yoshimi Suwa, Ichiro Kajiwara
  • Cycloolefin copolymer obtained by ring-opening polymerization, use thereof, and process for producing retardation plate comprising the copolymer
    Patent number: 7449532
    Abstract: A cycloolefin copolymer obtained by ring opening polymerization according to the present invention is characterized by comprising a specific structural unit and exhibiting a single peak in a derivative differential scanning calorimetry curve obtained by differential scanning calorimeter (DSC), having a temperature width of the rising part in the peak of 35° C. or below, and having a glass transition temperature (Tg) of 110° C. or above. The cycloolefin copolymer provided by the present invention has excellent heat resistance and optical properties, is suitable for the formation of a film or sheet therefrom, and can be stretched even at a relatively low temperature around the Tg without causing troubles such as cloudiness. A film or sheet comprising the cycloolefin copolymer, which has excellent optical properties and heat resistance and is also suitable for stretching even at a relatively low temperature, is also provided.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: November 11, 2008
    Assignee: JSR Corporation
    Inventors: Motoki Okaniwa, Ichiro Kajiwara, Yoshimi Suwa, Yoichiro Maruyama, Yuichi Hashiguchi
  • Cycloolefin copolymer obtained by ring-opening polymerization, use thereof, and process for producing retardation plate comprising the copolymer
    Publication number: 20070179264
    Abstract: A cycloolefin copolymer obtained by ring opening polymerization according to the present invention is characterized by comprising a specific structural unit and exhibiting a single peak in a derivative differential scanning calorimetry curve obtained by differential scanning calorimeter (DSC), having a temperature width of the rising part in the peak of 35° C. or below, and having a glass transition temperature (Tg) of 110° C. or above. The cycloolefin copolymer provided by the present invention has excellent heat resistance and optical properties, is suitable for the formation of a film or sheet therefrom, and can be stretched even at a relatively low temperature around the Tg without causing troubles such as cloudiness. A film or sheet comprising the cycloolefin copolymer, which has excellent optical properties and heat resistance and is also suitable for stretching even at a relatively low temperature, is also provided.
    Type: Application
    Filed: April 20, 2005
    Publication date: August 2, 2007
    Inventors: Motoki Okaniwa, Ichiro Kajiwara, Yoshimi Suwa, Yoichiro Maruyama, Yuichi Hashiguchi