Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5927958 | Fluid machinery having a sealing member between stepped spirals | Hirotsugu Sakata, Masayuki Okuda | 1999-07-27 |
| 5368457 | Fluid compressor having a molded helical blade | Noriko Watanabe | 1994-11-29 |
| 4460937 | Gas-insulated switching apparatus | Isao Kamata | 1984-07-17 |