Patents by Inventor Eizi Ukita

Eizi Ukita 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).

  • Molding material for optics
    Patent number: 4888401
    Abstract: A resin composition for optics is disclosed, which mainly comprises a graft copolymer comprising a styrene resin and an aromatic polycarbonate each having a specific molecular weight at a specific ratio of molecular weight and weight, said composition having a micro disperse phase of not more than 0.5 .mu.m. The resin composition has a reduced optical strain and an excellent micro disperse phase and is, therefore, suitable for use as optics.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: December 19, 1989
    Assignee: Mitsubishi Gas Chemical Co., Ltd.
    Inventors: Takao Kawaki, Yasuhiko Kijima, Yuh Miyauchi, Eizi Ukita, Toru Nakajima, Mituhiko Masumoto