Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9423016 | Hydraulic oil deterioration ratio estimating apparatus in vehicle | — | 2016-08-23 |
| 7433770 | Hydraulic fluid change indicating device for automatic transmission | Yasushi Inagawa, Hideo Koyama, Yoshiari Takagi | 2008-10-07 |
| 5975270 | Clutch disk of C/C composite for a wet friction clutch, and process for producing the same | Toshio Tokune, Tetsuo Naraki, Eiichiro Kawahara, Tsukasa Takahashi, Takao Nakagawa +1 more | 1999-11-02 |
| 5381724 | Swash-plate, plunger-type hydraul pressure apparatus | Eiichiro Kawahara, Takashi Nakamura, Kazuaki Sakai | 1995-01-17 |
| 5072587 | Hydraulically operated continuously variable transmission | Kenichi Ikejiri, Eiichiro Kawahara | 1991-12-17 |
| 4944154 | Hydraulically operated continuously variable transmission | Eiichiro Kawahara, Kenichi Ikejiri, Noboru Yamamoto | 1990-07-31 |
| 4939900 | Hydraulically operated continuously variable transmission | Eiichiro Kawahara, Kenichi Ikejiri, Noboru Yamamoto | 1990-07-10 |
| 4922715 | Hydraulically operated continuously variable transmission | Eiichiro Kawahara, Takashi Koyama | 1990-05-08 |
| 4893548 | Hydraulically operated swash-type apparatus | Eiichiro Kawahara, Takashi Koyama | 1990-01-16 |
| 4864823 | Hydraulically operated continuously variable transmission | Kenichi Ikejiri, Eiichiro Kawahara | 1989-09-12 |
| 4838024 | Hydraulically operated continuously variable transmission | Noboru Yamamoto, Eiichiro Kawahara, Kenichi Ikehjiri | 1989-06-13 |
| 4646520 | Torque fluctuation absorber between a flywheel and a stepless hydraulic transmission | Kouji Yamaguchi, Eiichiro Kawahara, Kenichi Ikejiri | 1987-03-03 |