Patents by Inventor Hiroyuki Mitsunaga

Hiroyuki Mitsunaga 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).

  • POLYESTER RESIN, POLYESTER RESIN COMPOSITION THEREFROM AND USE THEREOF
    Publication number: 20090297752
    Abstract: A polyester resin that can be beneficially employed as one finding application in deactivation of polycondensation catalysts for polyester production and suppression of forming of acetaldehyde and other aldehydes and cyclic ester oligomers at molding stage. In particular, there is provided a polyester resin composed mainly of an aromatic dicarboxylic acid component and a glycol component wherein a phosphorus compound is incorporated through copolymerization or blending in an amount of 100 to 10,000 ppm in terms of phosphorus element, characterized in that the contents of Zn element, Fe element, Ni element and Cr element are not greater than specified values.
    Type: Application
    Filed: August 9, 2005
    Publication date: December 3, 2009
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Keiichiro Togawa, Yoshinao Matsui, Kosuke Uotani, Atsushi Hara, Hiroyuki Mitsunaga, Takahiro Nakajima, Naoki Watanabe, Toshio Owari, Yoshitaka Eto