Patents by Inventor Tomoyuki Tamura

Tomoyuki Tamura 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 processing using a reproducible molding die
    Patent number: 4876042
    Abstract: A reproducible molding die including a base structure having an unevenness pattern, and a cleaning layer disposed on the surface of the base structure having the unevenness pattern, wherein the cleaning layer is removable while substantially retaining the unevenness pattern of the base structure. By using above-mentioned molding die, a possible molding residue left in a molding step can easily be removed together with the cleaning layer.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: October 24, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Imataki, Mizuho Hiraoka, Tomoyuki Tamura, Tetsuya Satoh