Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255619 | Lens, semiconductor laser element, device for machining the lens and element, process for producing semiconductor laser element, optical element, and device and method for machining optical element | Takahisa Jitsuno, Keiu Tokumara | 2001-07-03 |
| 5011265 | Optical attenuator | Shoji Sekiguchi | 1991-04-30 |
| 4818934 | Apparatus for measuring characteristics of electronic devices | — | 1989-04-04 |
| 4782290 | Apparatus for measuring characteristics or electronic devices | Ryoichi Sakai | 1988-11-01 |
| 4727318 | Apparatus for measuring characteristics of electronic devices | Ryoichi Sakai | 1988-02-23 |