Patents by Inventor Yoshihide Iwasaki

Yoshihide Iwasaki 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).

  • Polyimides, thermosetting resin compositions containing the polyimides, formed articles of the resin compositions, and production process of the polyimides
    Patent number: 5510425
    Abstract: A polymide comprises structural units represented by the following formula: ##STR1## wherein Ar is a group consisting of 10-90 mole % of a first specific structural sub-unit and 90-10 mole % of a second particular structural sub-unit. A process for the production of the polyimide and a thermosetting resin composition comprising the polyimide and a particular polymaleimide are also disclosed.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: April 23, 1996
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Hidekazu Matsuura, Yoshihide Iwasaki, Kaori Ikeda, Takayuki Suzuki, Masashi Tanaka, Yasuo Miyadera
  • Polyimides, thermosetting resin compositions containing the polyimides, formed articles of the resin compositions, and production process of polyimides
    Patent number: 5508357
    Abstract: A polyimide comprises structural units represented by the following formula: ##STR1## wherein Ar is a group consisting of 10-90 mole % of a first specific structural sub-unit and 90-10 mole % of a second particular structural sub-unit. A process for the production of the polyimide and a thermosetting resin composition comprising the polyimide and a particular polymaleimide are also disclosed.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: April 16, 1996
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Hidekazu Matsuura, Yoshihide Iwasaki, Kaori Ikeda, Takayuki Suzuki, Masashi Tanaka, Yasuo Miyadera