Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5038329 | Step motor control mechanism for electronic timepiece | Yoshikazu Kawamura, Sakiho Okazaki | 1991-08-06 |
| 4715725 | Step motor control mechanism for electronic timepiece | Yoshikazu Kawamura, Sakiho Okazaki, Hiroshi Ishii | 1987-12-29 |
| 4675224 | Magnetic recording medium | — | 1987-06-23 |
| 4648691 | Liquid crystal display device having diffusely reflective picture electrode and pleochroic dye | Koichi Oguchi, Satoru Yazawa, Mitsuo Nagata | 1987-03-10 |
| 4599005 | Step motor control mechanism for electronic timepiece | Yoshikazu Kawamura, Sakiho Okazaki, Hiroshi Ishii | 1986-07-08 |
| 4575777 | Magnetic recording and reproducing head | — | 1986-03-11 |
| 4522507 | Step motor control mechanism for electronic timepiece | Yoshikazu Kawamura, Sakiho Okazaki, Hiroshi Ishii | 1985-06-11 |
| 4429305 | Liquid crystal display system | Koichi Oguchi, Satoru Yazawa | 1984-01-31 |
| 4427266 | Driving system for matrix liquid crystal display with nonlinear-switches | — | 1984-01-24 |
| 4393380 | Liquid crystal display systems | Masayuki Ikeda, Satoru Yazawa | 1983-07-12 |
| 4370065 | Step motor control mechanism for electronic timepiece | Yoshikazu Kawamura, Sakiho Okazaki, Hiroshi Ishii | 1983-01-25 |
| 4212156 | Step motor control mechanism for electronic timepiece | Yoshikazu Kawamura, Sakiho Okazaki, Hiroshi Ishii | 1980-07-15 |
| 4192131 | Step motor control mechanism for electronic timepiece | Hiroshi Ishii, Yoshikazu Kawamura, Sakiho Okazaki | 1980-03-11 |