Patents by Inventor Wakahata Tamotsu

Wakahata Tamotsu 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).

  • Photosetting resin compositions
    Patent number: 4425209
    Abstract: A photosetting resin composition containing more than 10% by weight of one or more resins each having more than 3 functional groups--acryloyl or methacryloyl radicals--and a sensitizer. Since the compositions contain more than 10% by weight of one or more resins each having more than three functional groups, they exhibit very satisfactory and well balanced resistance-to-solder (JISC-6481, 260.degree. C., 10 sec), flexural strength (JISP-8115, 0.38R, 180.degree. bending) and adhesion (JISD-0202, chequer pattern test).
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: January 10, 1984
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keiji Saeki, Junji Ikeda, Wakahata Tamotsu