Patents by Inventor Hisayasu Tsujino

Hisayasu Tsujino 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).

  • Grommet
    Patent number: 6267385
    Abstract: A grommet which is formed from a self-lubricating rubber, and can be fixed by means of a wire such as electric wires and an adhesive tape. The rubber grommet (10) is fixed to the electric wire (14) with the adhesive tapes (12, 12) and inserted into a through hole (22) penetrating through a partition (20) to provide sealing between the electric wire (14) and an inner wall of the through hole (22). Rubber forming the grommet (10) is a self-lubricating rubber containing an oily polyalkyl carbonate, which is represented by the following chemical formula: Ri—O—CO—O—[CH2CH2C(CH3)HCH2CH2—O—CO —O]n—Ri wherein n is an integer of 1 to 8, and Ri represents (i—C7H15).
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: July 31, 2001
    Assignee: Kabushiki Kaisha Miyasaka Gomu
    Inventors: Katsuo Okamoto, Masanori Okazawa, Yutaka Shibata, Katsuhiko Aoki, Hisayasu Tsujino