Patents by Inventor Tomoyuki Akeda

Tomoyuki Akeda 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).

  • Method of treating surface of molded polyacetal resin product
    Patent number: 4826565
    Abstract: A molded article of polyacetal resin is surface-roughened by etching with an acidic solution which includes a compound selected from an amine, an amide, a thiourea, a quinoline, a thioether, a thiol and a derivative of acetylene.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: May 2, 1989
    Assignee: Polyplastics Co., Ltd.
    Inventors: Yoshiharu Susuki, Tomoyuki Akeda