Patents by Inventor Etsuo Otake

Etsuo Otake 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).

  • Low-melting glass paste and cellulose nitrate therefor
    Patent number: 4521251
    Abstract: A cellulose nitrate having a degree of nitration of from 12.2% to 14.1% in terms of the nitrogen content and a degree of polymerization of from 100 to 1,000 is suitable to prepare a low-melting glass paste.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: June 4, 1985
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Etsuo Otake, Mamoru Kimura, Hiromu Yokota, Tetuo Kanematu