Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5143217 | Tape-cartridge case with thin, single layer side wall for reading UPC code | — | 1992-09-01 |
| 4918558 | Magnetic tape cassette having reel locks controlled by an optical tape end detecting element | Takashi Ota, Takeo Oba | 1990-04-17 |
| 4896238 | Tape cassette with pressable cap for fixing reel on reel base | Takashi Oogi, Haruyuki Karibe | 1990-01-23 |
| 4864448 | Tape cassette | Haruyuki Karibe, Takashi Oogi | 1989-09-05 |
| 4791504 | Tape cassette with lid lock and tape characteristic indicating member | Takashi Oogi | 1988-12-13 |
| D293569 | Reel for a video tape cassette | — | 1988-01-05 |
| D293570 | Reel for a video tape cassette | — | 1988-01-05 |
| 4646188 | VTR tape cassette | Shinichiro Kato, Teruo Chiba | 1987-02-24 |