Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12251057 | Roll paper holder | — | 2025-03-18 |
| 11940671 | Spectacle-like frame | — | 2024-03-26 |
| 11480814 | Spectacle-like frame | — | 2022-10-25 |
| 11169395 | Frame for bifocal eyeglasses | — | 2021-11-09 |
| 11119336 | Bifocal glasses-shaped frame | — | 2021-09-14 |
| 10838229 | Bifocal glasses-shaped frame | — | 2020-11-17 |
| 6897006 | Multilayered photosensitive material for flexographic printing plate | Takashi Fujimoto, Toshiya Takagi, Katsuyuki Ohta | 2005-05-24 |
| 5103411 | Electronic odometer wherein medium order digit data addresses locations which store high and low order digit data | Makoto Shida | 1992-04-07 |
| 4764980 | System for measuring delay time variation in optical fiber digital communication system | Haruo Sakaguchi, Shu Yamamoto, Yoshinao Iwamoto | 1988-08-16 |
| 4747094 | Signal coupling system for optical repeater system | Haruo Sakaguchi, Shu Yamamoto, Yoshinao Iwamoto | 1988-05-24 |
| 4609113 | Cup permitting easy drinking-up | — | 1986-09-02 |
| 4523802 | Unitary mounting structure for semiconductor laser and optical fiber | Haruo Sakaguchi, Shu Yamamoto, Akira Okada | 1985-06-18 |
| 4490020 | Coupling system for output light of semiconductor laser | Haruo Sakaguchi, Shu Yamamoto | 1984-12-25 |
| 4408831 | Optical switch | Haruo Sakaguchi, Shu Yamamoto, Hiroharu Wakabayashi | 1983-10-11 |
| 4369523 | Remote control system of an optical repeater | Yohtaro Yatsuzuka, Haruo Sakaguchi | 1983-01-18 |
| 4341438 | Light source arrangement in an optical communication system | Yohtaro Yatsuzuka, Haruo Sakaguchi | 1982-07-27 |
| 4281416 | Light source system in an optical transmission repeater | Yohtaro Yatsuzuka, Haruo Sakaguchi | 1981-07-28 |
| 4257033 | Fault locating system in optical fiber transmission system | Chuichi Ota, Haruo Sakaguchi | 1981-03-17 |
| 4200924 | Logical operation circuit using magnetic bubbles | Hideo Ishihara | 1980-04-29 |