Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6138555 | Food processing device and electric system for the processing device, and high voltage-weak pulse electric current impresser for food | — | 2000-10-31 |
| 5543970 | Zoom lens system | Yukio Maekawa, Katsuhiro Takamoto, Manami Saka | 1996-08-06 |
| 5296968 | Zoom lens system | Masami Tanaka | 1994-03-22 |
| 5155630 | Zoom lens system | — | 1992-10-13 |
| 5009491 | Compact zoom lens system | — | 1991-04-23 |
| 4993814 | Zoom lens system | — | 1991-02-19 |
| 4984876 | Zoom lens system | Masami Tanaka | 1991-01-15 |
| 4767202 | Objective lens system for optical recording type disks | Sachiko Takamura | 1988-08-30 |
| 4720181 | Large aperature ratio zoom lens system | — | 1988-01-19 |