Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5083802 | Lip seal device | Keiichi Shimasaki, Hiroshi Kanayama, Hiroshi Kanemitsu, Makoto Shibata, Akira Takenaka | 1992-01-28 |
| 4834397 | Lip seal device having an annular groove | Keiichi Shimasaki, Hiroshi Kanayama, Hiroshi Kanemitsu, Makoto Shibata, Akira Takenaka | 1989-05-30 |
| 4822059 | Dual lip seal device | Keiichi Shimasaki, Hiroshi Kanayama, Hiroshi Kanemitsu, Makoto Shibata, Akira Takenaka | 1989-04-18 |