Patents by Inventor Ryoichi Fujitani

Ryoichi Fujitani 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: 6143840
    Abstract: The present invention provides a resin composition containing a polyester resin processing, within its molecular structure, a structural unit represented by the following formula (I), and an amino resin: ##STR1## [wherein, R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom or lower alkyl, with the proviso that R.sup.1 and R.sup.2 do not simultaneously represent hydrogen atoms]. In addition, the present invention provides a cured resin obtained by means of hardening said resin composition, and a paint containing said resin composition. The aforementioned resin composition provides a cured material that exhibits excellent resistance to hydrolysis, resistance to alkali, and resistance to cissing, and thus is suitable for a paint and the like.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: November 7, 2000
    Assignee: Kyowa Yuka Co., Ltd.
    Inventors: Shigeru Murata, Toshio Yamauchi, Ryoichi Fujitani
  • Patent number: 4067827
    Abstract: A process for improving the production of polymethyl methacrylate beads or copolymeric methyl methacrylate and vinyl beads wherein the monomer is polymerized in the presence of a foaming agent and foaming agent stabilizer and within an atmosphere of inert gas, such as nitrogen, at a pressure of at least 4 kg/cm.sup.2.G. The polymerizatin is pressurized after the reaction has proceeded to a conversion ratio of from 30 to 70%. The process essentially eliminates aggregation and "sticking together" of the beads produced thereby.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: January 10, 1978
    Inventors: Yoshinari Takano, Keiji Fujita, Yasuo Teraoka, Masahiro Nishida, Ryoichi Fujitani, Yaichi Kuratomo