Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6799698 | Liquid material supply system | Hisatoshi Izumi, Satoru Kurahashi, Yoshihiro Sugino, Nobuhisa Suhara | 2004-10-05 | |
| 5769618 | Uniaxial eccentric screw pump having a flexible plastic shaft | Mikio Yamashita, Eiji Hayashi | 1998-06-23 | |
| 5129661 | Steel oil ring assembly | Hitoshi Hattori, Hatsutaro Mizuno | 1992-07-14 | |
| 5088743 | Combined oil ring assembly | — | 1992-02-18 | |
| 5087055 | Steel oil ring assembly | Hitoshi Hattori, Hatsutaro Mizuno | 1992-02-11 | |
| 5042825 | Combined oil ring assembly | — | 1991-08-27 | |
| 4722535 | Oil ring structure having reduced rigidity | Yorishige Maeda, Yoshiaki Wada, Shizuo Shinada | 1988-02-02 | $32,000 |
| 4542907 | Corrugated expander for piston ring assembly | Ko Chiba, Yoshiaki Wada, Hiroshi Miida | 1985-09-24 |