Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5847824 | Automatic angle compensator | Fumio Ohtomo, Ikuo Ishinabe, Jun-ichi Kodaira | 1998-12-08 |
| 5638220 | Device for producing ring-shaped laser spot | Fumio Ohtomo, Youhei Ogawa, Yoshiyuki Enomoto | 1997-06-10 |
| 5513001 | Tilt angle automatic compensator in all directions | Fumio Ohtomo, Ikuo Ishinabe, Takaaki Yamazaki, Junichi Kodaira | 1996-04-30 |
| 4692023 | Optical adapter for a light-wave rangefinder | Fumio Ohtomo, Nobuo Hori, Yoshio Horikawa, Kazuaki Kimura | 1987-09-08 |
| 4666299 | Inclination measuring apparatus having a prism with associated liquid container | Hiroshi Tamaki, Fumitomo Kondo | 1987-05-19 |