Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6230107 | Vehicle speed detection system | Shigeru Yamamoto, Yasuo Kitahara | 2001-05-08 |
| 6181999 | Dozing device for bulldozer | Shigeru Yamamoto | 2001-01-30 |
| 6129158 | Hydraulic system for bulldozer | Shigeru Yamamoto | 2000-10-10 |
| 6035249 | System for determining the position of a bulldozer | Shigeru Yamamoto | 2000-03-07 |
| 5996703 | Dozing apparatus of a bulldozer | Shigeru Yamamoto | 1999-12-07 |
| 5984018 | Dozing system for controlling a cutting angle of a bulldozer blade during dozing operation | Shigeru Yamamoto | 1999-11-16 |
| 5983151 | Tractive force control apparatus and method for construction equipment | Toshikazu Okada, Shigeru Yamamoto, Noriaki Namiki, Nobuhisa Kamikawa | 1999-11-09 |
| 5950141 | Dozing system for bulldozer | Shigeru Yamamoto, Hiroshi Itogawa, Nobuhisa Kamikawa | 1999-09-07 |
| 5875854 | Dozing system for bulldozer | Shigeru Yamamoto | 1999-03-02 |
| 5816335 | Dozing system for use in bulldozer | Shigeru Yamamoto | 1998-10-06 |
| 5620053 | Blade apparatus and its control method in bulldozer | Nobuhisa Kamikawa, Toshikazu Okada, Naomi Kobayashi, Hiroshi Itogawa, Noriaki Namiki +2 more | 1997-04-15 |
| 5558590 | Geared steering device for crawler vehicle and control unit therefor | Toshikazu Okada, Hiroshi Itogawa | 1996-09-24 |