Patents by Inventor Hitoshi Furusaki

Hitoshi Furusaki 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 and production method thereof
    Patent number: 6129961
    Abstract: A polyester resin comprising a polyester resin chip (A) and a polyester resin fine particle (B) which has the same composition as the (A) and which passes through a 10.5 mesh screen in a proportion of 0.1-300 ppm, wherein a cyclic trimer increases in a proportion of not more than 0.30 wt % upon melting at a temperature of 290.degree. C. for 60 minutes; a polyester resin characterized in that a cyclic trimer increases in a proportion of not more than 0.30 wt % upon melting at a temperature of 290.degree. C. for 60 minutes, and the contents of Na, Ca, Mg and/or Si in the polyeser resin is 0.001-5 ppm and the total of these contents is not more than 10 ppm; and production methods thereof.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: October 10, 2000
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Hirotoshi Sonoda, Atsushi Hara, Mitsuhiro Harada, Yoshio Araki, Shouji Kikuchi, Takashi Hashimoto, Keisuke Suzuki, Hitoshi Furusaki, Kazuki Yamauchi, Yoshinao Matsui, Osamu Kimura, Yoshitaka Eto