Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884427 | Method of producing helical internal gear | Kazuo Sawahata | 1989-12-05 |
| 4884952 | Variable displacement compressor | Kenichi Gunji | 1989-12-05 |
| 4873150 | High water-resistant member, and valve gear using the same for use in internal combustion engine | Masayuki Doi, Naotatsu Asahi, Yoshitaka Kojima, Susumu Aoyama | 1989-10-10 |
| 4829950 | Valve lifter and method of producing the same | Yosimi Sugaya | 1989-05-16 |
| 4815192 | Method of securing an elongated vibration amplifier member to an annular vibrating reed | Toshifumi Usui, Syozo Yanagisawa, Kazuhiro Tsuruoka | 1989-03-28 |
| 4815195 | Method of combining plurality of parts and structure of plurality of parts combined by same | Kazuhiro Tsuruoka, Takefumi Ohwada, Isao Hayase, Masao Mizukami | 1989-03-28 |