Patents by Inventor Moritoshi Matsumoto

Moritoshi Matsumoto 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: 7863354
    Abstract: A resin composition which contains polycarbonate resin, does not transmit a wavelength of 385 nm substantially and has a high total light transmittance and excellent heat resistance. The resin composition comprises (1) polycarbonate resin, (2) an ultraviolet absorber (A) such as 2-(2H-benzotriazol-2-yl)-p-cresol, (3) an ultraviolet absorber (B) such as 2,2?-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol] and (4) at least one compound (C) represented by the following formula (I) or (II) and is used for spectacle lenses. (R1—S—CH2—CH2—C(O)O—CH2—)4C??(I) (R2—O—C(O)—CH2—CH2—)2S??(II) (wherein R1 is an alkyl group having 4 to 20 carbon atoms, and R2 is an alkyl group having 6 to 22 carbon atoms.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: January 4, 2011
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Seiichi Tanabe, Moritoshi Matsumoto, Jiro Ariki
  • Publication number: 20100330362
    Abstract: A laminated sheet having a substrate layer and a cover layer which is formed on at least one side of the substrate layer, wherein (i) the substrate layer contains a polycarbonate resin and a specific thioether-based compound; and (ii) the cover layer contains a polycarbonate resin and at least one ultraviolet absorbent selected from the group consisting of a benzotriazole-based compound having a molecular weight of not less than 380, a triazine-based compound having a molecular weight of not less than 400 and a specific cyclic iminoester-based compound. The laminated sheet is excellent in weatherability and color.
    Type: Application
    Filed: February 10, 2009
    Publication date: December 30, 2010
    Inventors: Moritoshi Matsumoto, Seiichi Tanabe, Jiro Ariki
  • Publication number: 20100029812
    Abstract: A resin composition which contains polycarbonate resin, does not transmit a wavelength of 385 nm substantially and has a high total light transmittance and excellent heat resistance. The resin composition comprises (1) polycarbonate resin, (2) an ultraviolet absorber (A) such as 2-(2H-benzotriazol-2-yl)-p-cresol, (3) an ultraviolet absorber (B) such as 2,2?-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol] and (4) at least one compound (C) represented by the following formula (I) or (II) and is used for spectacle lenses. (R1—S—CH2—CH2—C(O)O—CH2—)4C??(I) (R2—O—C(O)—CH2—CH2—)2S??(II) (wherein R1 is an alkyl group having 4 to 20 carbon atoms, and R2 is an alkyl group having 6 to 22 carbon atoms.
    Type: Application
    Filed: December 4, 2007
    Publication date: February 4, 2010
    Inventors: Seiichi Tanabe, Moritoshi Matsumoto, Jiro Ariki