Patents by Inventor Hiroshi Samukuaa

Hiroshi Samukuaa 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).

  • Photocurable self-retainable gel, shaped article prepared therefrom, applications and preparations thereof
    Patent number: 5292618
    Abstract: A photocurable gel suitable for articles such as printing plates, photoresists and the like is disclosed. The photocurable gel comprises (a) a polymer composition having isotactic polymethyl methacrylate moiety; and syndiotactic polymethyl methacrylate moiety; (b) a photopolymerizable ethylenically unsaturated compound; and (c) a photopolymerization initiator. The gel is solid at ambient temperature and is capable of undergoing reversible gel/sol transition by heating or cooling. Methods of preparing articles, as well as methods of fixing articles, which use the gel are also disclosed. Such methods include sealing or affixing component parts on an electronic circuit board.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: March 8, 1994
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Yoshichi Hagiwara, Yuichi Mori, Hiroshi Samukuaa, Kazuhide Saigo