Patents by Inventor Yoshitake Tubota

Yoshitake Tubota 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).

  • Touch roller for plastic polymer film manufacturing apparatus
    Patent number: 5071083
    Abstract: A metallic touch roller for use in an apparatus for manufacturing film rolls. The outer surface of the touch roller has a matte-finish with a plurality of symmetrically formed spiral grooves extending over the length of the roller. A mean surface roughness of the matte-finished surface may be from 0.5 to 2.0 .mu.m and, preferably, from 1.0 to 1.3 .mu.m.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: December 10, 1991
    Assignee: Shin-Etsu Film Co., Ltd.
    Inventors: Yoshitake Tubota, Haruyasu Shigeta