Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5367843 | Roof apparatus | Keisuke Hirai | 1994-11-29 |
| 5121583 | Roof | Yoshio Kaneko | 1992-06-16 |
| 4228791 | Solar energy collecting roof | Tadahiro Hino | 1980-10-21 |
TH
Takashi Hirai
Hirai Engineering: 5 patents #1 of 3Top 35%
Fujifilm Business Innovation: 3 patents #2,355 of 5,238Top 45%
Toyota: 3 patents #8,352 of 26,838Top 35%
Hitachi: 1 patents #17,742 of 28,497Top 65%
Satake: 1 patents #113 of 187Top 65%
Ube Machinery Corporation: 1 patents #22 of 59Top 40%
Hitachi Software Engineering Co.: 1 patents #175 of 502Top 35%
Overall (All Time): #138,934 of 4,157,543Top 4%
28
Patents All Time