Patents by Inventor Mitsuhiro Takeo

Mitsuhiro Takeo 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: 8110622
    Abstract: A resin composition consisting of: (1) 100 parts by weight of an aromatic polycarbonate resin; (2) 0.008 to 0.13 part by weight of an alkali metal salt of a perfluoroalkylsulfonic acid having a fluoride ion content measured by ion chromatography of 0.2 to 1 ppm in terms of weight based on the weight of component B; and (3) 0.01 to 5 parts by weight of silicone having a Si—H group and a phenyl group. A process of manufacturing the resin composition and a method of preventing the melt dripping during combustion of the resin composition. The flame retardancy of the above aromatic polycarbonate resin composition comprising the fluorine-containing organic metal salt compound is improved.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: February 7, 2012
    Assignee: Teijin Chemicals Ltd.
    Inventors: Yoji Ohira, Tetsushi Ono, Hidekazu Ito, Makoto Takagi, Takuya Tomoda, Hidenori Nakagawa, Mitsuhiro Takeo, Kazuhiko Koya
  • Patent number: 7674506
    Abstract: There is provided a direct backlight type liquid crystal display device having high light diffusability, keeping excellent color and having high brightness.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: March 9, 2010
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Isao Sogo, Masato Ando, Mitsuhiro Takeo, Koji Maeda, Masanao Jinno
  • Publication number: 20070299169
    Abstract: A resin composition comprising: (1) 100 parts by weight of an aromatic polycarbonate resin (component A); (2) 0.005 to 0.6 part by weight of a fluorine-containing organic metal salt having a fluoride ion content measured by ion chromatography of 0.2 to 20 ppm in terms of weight (component B); and (3) at least one component selected from the group consisting of a flame retardant (component C), a fatty acid ester (component D), an ultraviolet light absorber (component E), polytetrafluoroethylene having fibril formability (component F), a filler (component G), a silicate mineral (component H) and a titanium dioxide pigment (component I). A process of manufacturing the resin compositon and a method of preventing the melt dripping during combustion of the resin composition. The flame retardancy of the above aromatic polycarbonate resin composition comprising the fluorine-containing organic metal salt compound is improved.
    Type: Application
    Filed: April 6, 2005
    Publication date: December 27, 2007
    Inventors: Yoji Ohira, Tetsushi Ono, Hidekazu Ito, Makoto Takagi, Takuya Tomoda, Hidenori Nakagawa, Mitsuhiro Takeo, Kazuhiko Koya
  • Patent number: 7241825
    Abstract: The object of the present invention is to provide a polycarbonate resin composition which has excellent transparency and durability against molding heat, which gives a molded article having an excellent mold release property, reduced strains, improved cracking resistance and, preferably, weatherability, and which is particularly suitable for a transparent member for a vehicle, pellets thereof and a molded article thereof, and the present invention provides a polycarbonate resin composition obtained by blending 100 parts by weight of a polycarbonate resin (Component A) and 0.005 to 2 parts by weight of a full ester (Component B) from an aliphatic polyhydric alcohol having 4 to 8 hydroxyl groups and 5 to 30 carbon atoms and an aliphatic carboxylic acid having 10 to 22 carbon atoms, said Component B having a 5% weight loss temperature, measured by TGA (thermogravimetric analysis), of 250 to 360° C. and having an acid value of 4 to 20, pellets thereof and a molded article thereof.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: July 10, 2007
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Takashi Koga, Mitsuhiro Takeo, Daisuke Takahashi
  • Patent number: 7148313
    Abstract: A polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (component A), 0.01 to 10 parts by weight of at least one ultraviolet light absorber (component B) selected from the group of a specific cyclic imino ester, and 0.01 to 1 part by weight of a fatty acid ester compound (component C) which is an ester of a polyhydric alcohol and an aliphatic carboxylic acid and has a molecular weight of 500 to 2,000 g/mol, as well as molded articles thereof. The polycarbonate resin composition provides molded articles having excellent transparency, color and resistance to ultraviolet radiation, is excellent in heat stability at the time of molding and releasability and fully suppresses the production of a deposit on a metal mold.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: December 12, 2006
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Takashi Koga, Daisuke Takahashi, Mitsuhiro Takeo
  • Publication number: 20060146228
    Abstract: There is provided a direct backlight type liquid crystal display device having high light diffusability, keeping excellent color and having high brightness.
    Type: Application
    Filed: June 16, 2004
    Publication date: July 6, 2006
    Inventors: Isao Sogo, Masato Ando, Mitsuhiro Takeo, Koji Maeda, Masanao Jinno
  • Publication number: 20050215750
    Abstract: A polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (component A), 0.01 to 10 parts by weight of at least one ultraviolet light absorber (component B) selected from the group of a specific cyclic imino ester, and 0.01 to 1 part by weight of a fatty acid ester compound (component C) which is an ester of a polyhydric alcohol and an aliphatic carboxylic acid and has a molecular weight of 500 to 2,000 g/mol, as well as molded articles thereof. The polycarbonate resin composition provides molded articles having excellent transparency, color and resistance to ultraviolet radiation, is excellent in heat stability at the time of molding and releasability and fully suppresses the production of a deposit on a metal mold.
    Type: Application
    Filed: July 8, 2004
    Publication date: September 29, 2005
    Inventors: Takashi Koga, Daisuke Takahashi, Mitsuhiro Takeo
  • Publication number: 20040152806
    Abstract: The object of the present invention is to provide a polycarbonate resin composition which has excellent transparency and durability against molding heat, which gives a molded article having an excellent mold release property, reduced strains, improved cracking resistance and, preferably, weatherability, and which is particularly suitable for a transparent member for a vehicle, pellets thereof and a molded article thereof, and the present invention provides a polycarbonate resin composition obtained by blending 100 parts by weight of a polycarbonate resin (Component A) and 0.005 to 2 parts by weight of a full ester (Component B) from an aliphatic polyhydric alcohol having 4 to 8 hydroxyl groups and 5 to 30 carbon atoms and an aliphatic carboxylic acid having 10 to 22 carbon atoms, said Component B having a 5% weight loss temperature, measured by TGA (thermogravimetric analysis), of 250 to 360° C. and having an acid value of 4 to 20, pellets thereof and a molded article thereof.
    Type: Application
    Filed: January 8, 2004
    Publication date: August 5, 2004
    Inventors: Takashi Koga, Mitsuhiro Takeo, Daisuke Takahashi