Patents by Inventor Tetsuo Ohwada

Tetsuo Ohwada 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).

  • Masking tape for use in manufacturing a printed board
    Patent number: 4728568
    Abstract: Disclosed is a masking tape suitable for use in manufacturing a printed circuit board. The masking tape comprises a water soluble paper as a tape base material, and a water soluble adhesive agent applied to one side of the paper. A method of filling through-holes employing such a water soluble masking tape in a process of manufacturing a printed circuit board is also disclosed.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: March 1, 1988
    Assignees: Dainippon Screen Mfg. Co., Ltd., Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Shigeru Sasada, Tetsuo Ohwada, Masaru Mishima