Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955168 | Solar heat collecting apparatus | — | 2005-10-18 |
| 6756593 | Flame Sensor | Masanori Hirasawa | 2004-06-29 |
| 6677590 | Flame sensor | Masanori Hirasawa | 2004-01-13 |
| 6119683 | Solar heat collecting apparatus | — | 2000-09-19 |
| 4854619 | Electric key | — | 1989-08-08 |
| 4798068 | Electrically controlled type cylinder for locks | — | 1989-01-17 |
| 4382291 | Surveillance system in which a reflected signal pattern is compared to a reference pattern | — | 1983-05-03 |
| 4286294 | Recording/reproducing system | Fumio Watase | 1981-08-25 |
| 4233596 | Flare monitoring apparatus | Hiroo Okamoto | 1980-11-11 |