Issued Patents All Time
Showing 251–275 of 293 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947280 | Rotary magnetic reproducing apparatus with disc sensing logic | Yoshiaki Nakayama | 1990-08-07 |
| 4941840 | Circuit board mounting apparatus | — | 1990-07-17 |
| 4908809 | Information-carrying medium equipment for magneto-optic reading and writing | Michihiro Tadokoro | 1990-03-13 |
| 4889339 | Slot machine | — | 1989-12-26 |
| 4881204 | Optical reading or writing apparatus | Michihiro Tadokoro, Hitoshi Imai | 1989-11-14 |
| 4876666 | Wavelength selective optical data storage system | Hitoshi Imai, Michihiro Tadokoro | 1989-10-24 |
| 4868807 | Wavelength selective optical data storage system | Michihiro Tadokoro, Hitoshi Imai | 1989-09-19 |
| 4868787 | Wavelength selective optical data storage system | — | 1989-09-19 |
| 4862442 | Focus detecting apparatus utilizing reflecting surface having variable reflectivity or transmissivity | Michihiro Tadokoro, Hitoshi Imai | 1989-08-29 |
| 4858032 | Device for extracting still picture frames from a moving image video signal and recording same on a magnetic recording medium | Masahiro Konishi | 1989-08-15 |
| 4827167 | Miniature motor | Etuo Mayumi, Hitoshi Fujiwara, Kunio Hiromasa | 1989-05-02 |
| 4822318 | Coin dispenser | — | 1989-04-18 |
| 4821863 | Token feed apparatus for slot machines | — | 1989-04-18 |
| 4819093 | Rotary magnetic recording-reproducing apparatus with disc track checking | Yoshiaki Nakayama | 1989-04-04 |
| 4773647 | Slot machine with stop switch enablement after attainment of minimum reel speed | Toshio Yamamoto | 1988-09-27 |
| 4772023 | Slot machine | — | 1988-09-20 |
| 4753625 | Coin pay-out apparatus | — | 1988-06-28 |
| 4752069 | Video game which instructs the user how to play | — | 1988-06-21 |
| 4741532 | Reel drive device for slot machine | — | 1988-05-03 |
| 4730899 | Optical signal reading device | Kenjiro Kime, Mitsushige Kondou | 1988-03-15 |
| 4725516 | Sealed lead-acid battery | Yuji MATSUMARU, Joji Yamashita, Kenjiro Kishimoto | 1988-02-16 |
| 4721307 | Slot machine | — | 1988-01-26 |
| 4718672 | Slot machine | — | 1988-01-12 |
| 4715604 | Slot machine | — | 1987-12-29 |
| 4700948 | Slot machine with playing card symbols | — | 1987-10-20 |