Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8016264 | Rotary-valve and adsorption separation system | Kenji Takemasa, Mitsuru Kudari, Masanobu Ninomiya | 2011-09-13 |
| 6431551 | Non-contact type mechanical seal | Eiji Okumachi | 2002-08-13 |
| 6325378 | Shaft seal apparatus | Eiji Okumachi, Satoshi Fujiwara | 2001-12-04 |
| 6305691 | Shaft sealing apparatus | — | 2001-10-23 |
| 6135458 | Static pressure non-contact gas seal | — | 2000-10-24 |
| 5664787 | Non-contacting shaft sealing device | Eiji Okumachi | 1997-09-09 |
| 5529318 | Non-contacting shaft sealing device | Eiji Okumachi | 1996-06-25 |
| 5501470 | Non-contacting shaft sealing device with grooved face pattern | Eiji Okumachi | 1996-03-26 |
| 5443274 | Non-contact mechanical seal | — | 1995-08-22 |
| 5421593 | Shaft seal device | Hirofumi Aritsubo | 1995-06-06 |
| 5398943 | Seal device of the non-contact type | Tadayuki Shimizu, Eiji Okumachi | 1995-03-21 |
| 4995622 | Magnetic fluid seal device | — | 1991-02-26 |