Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6202681 | Vacuum pressure control system | Masayuki Kouketsu, Masayuki Watanabe, Hiroshi Takehara | 2001-03-20 |
| 6041814 | Vacuum pressure control system | Masayuki Kouketsu, Masayuki Watanabe, Hiroshi Takehara | 2000-03-28 |