Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6945657 | Surveying instrument | Masami Shirai, Homu Takayama, Kenji Kaneko | 2005-09-20 |
| 6701093 | Integral transmitter-receiver optical communication apparatus and a crosstalk preventive device therefor | Tatsuo Gotoh, Homu Takayama, Yoichi Kojima, Masakazu Yamagata | 2004-03-02 |
| 6501540 | Surveying instrument having an optical distance meter | Masami Shirai | 2002-12-31 |
| 6384944 | Integral transmitter-receiver optical communication apparatus | Homu Takayama, Tatsuo Gotoh, Yoichi Kojima, Masakazu Yamagata | 2002-05-07 |
| 6141144 | Optical axis correcting system | Masakazu Yamagata, Tatsuo Gotoh, Homu Takayama, Yoichi Kojima | 2000-10-31 |
| 6078442 | ND filter | Eijiroh Tada, Masakazu Yamagata, Masayuki Arai, Toru Shikano, Takayasu Shishido | 2000-06-20 |
| 4553229 | Apparatus for reading information | — | 1985-11-12 |