Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7052259 | Vacuum exhausting apparatus | — | 2006-05-30 |
| 6386848 | Screw rotors and screw machine | — | 2002-05-14 |
| 5187994 | Rotary motion to longitudinal motion converting mechanism | Masanori Hirai, Hiroyuki Takenaka, Hidekazu Yokoi, Kiyoshi Ando | 1993-02-23 |