Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5237077 | Non-pollutional process for producing aromatic nitro compounds without using a mineral acid | Hitomi Suzuki, Takashi MURASHIMA | 1993-08-17 |
| 5191905 | Filter cigarette having filter containing absorptive synthetic graft polymer fibers produced from irradiated polyethylene reacted with vapor phase styrene or absorptive synthetic magnetic fibers | — | 1993-03-09 |
| 4313040 | Electro-acoustic transducer with free edge diaphragm | — | 1982-01-26 |
| 4260523 | Magnetized active carbon composition | — | 1981-04-07 |
| 4258730 | Electrostatic and magnetic tobacco smoke filtering arrangement | — | 1981-03-31 |
| 4235302 | Loudspeaker | — | 1980-11-25 |
| 4198610 | Audio amplifier | — | 1980-04-15 |