Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6930831 | Vari-focal polar alignment scope | — | 2005-08-16 |
| 6847482 | Image-erecting viewing optical system | Satoru Nemoto | 2005-01-25 |
| 6690518 | Camera-attachment lens system | Kae Shijo, Takayuki Ito | 2004-02-10 |
| D478328 | Speaker with microphone and headband | Taro Sumitomo | 2003-08-12 |
| 6529334 | Eyepiece variable focal length optics | Takayuki Ito | 2003-03-04 |
| 6512638 | Step zoom lens camera | Norio Sato | 2003-01-28 |
| 6437922 | Zoom lens system | Takashi Enomoto, Hiroshi Nomura, Takayuki Ito | 2002-08-20 |
| 6392820 | Optical system of a composite camera | Kae Shijo, Takayuki Ito | 2002-05-21 |
| 6384984 | Eyepiece variable focal length optics | Takayuki Ito | 2002-05-07 |
| 6369955 | Zoom lens system | Takashi Enomoto, Hiroshi Nomura, Takayuki Ito | 2002-04-09 |
| 6268966 | Zoom lens system | Takayuki Ito | 2001-07-31 |
| 6069736 | Anti-vibration lens attachment | Takayuki Ito | 2000-05-30 |
| 4243839 | Transducer with flux sensing coils | Kenichi Takahashi, Tatsuo Fukuyama, Takafumi Ueno, Yasuomi Shimada | 1981-01-06 |