Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324492 | Method of reducing nitrogen oxide content in gas | Kaichi Sakakibara, Shigehiro Kitoh, Shigeo Saiki | 1994-06-28 |
| 5120512 | Apparatus for sterilizing objects to be sterilized | — | 1992-06-09 |
| 4938844 | Process for producing fiber aggregate | Tomohito Ito, Hidetoshi Hirai, Renichi Isomura, Fukuo Gomi | 1990-07-03 |
| 4922099 | Electric field device | Isamu Fukuura | 1990-05-01 |
| 4769609 | Measurement of ultra-fine particles utilizing pulsed corona signals | — | 1988-09-06 |
| 4715870 | Electrostatic filter dust collector | Naoki Sugita | 1987-12-29 |
| 4706182 | RF high-voltage power supply | — | 1987-11-10 |
| 4672503 | Electric field forming apparatus | Isamu Fukuura, Hisaharu Shiromizu, Naotoshi Morita | 1987-06-09 |
| 4666679 | Ceramic ozonizer | Isamu Fukuura, Hisaharu Shiromizu | 1987-05-19 |
| 4665476 | High-voltage pulse power source and pulse-charging type electric dust collecting apparatus equipped therewith | — | 1987-05-12 |
| 4652281 | Film-shaped dust collecting electrodes and electric dust collecting apparatus having a stack of the same dust collecting electrodes | Ryohei Yonezawa, Kiyoshi Toida | 1987-03-24 |
| 4652318 | Method of making an electric field device | Isamu Fukuura | 1987-03-24 |
| 4644457 | High-frequency high-voltage power supply | — | 1987-02-17 |
| 4614573 | Method for producing an ozone gas and apparatus for producing the same | — | 1986-09-30 |
| 4541848 | Pulse power supply for generating extremely short pulse high voltages | — | 1985-09-17 |
| 4509958 | High-efficiency electrostatic filter device | Naoki Sugita | 1985-04-09 |
| 4472756 | Duct type charge eliminator | — | 1984-09-18 |
| 4435681 | Bipolar ionic current probe unit and method for measuring positive and negative current densities by means of the same probe unit | Yutaka Nonogaki | 1984-03-06 |
| 4414603 | Particle charging apparatus | — | 1983-11-08 |
| 4357150 | High-efficiency electrostatic air filter device | Naoki Sugita | 1982-11-02 |
| 4321066 | Electric dust collecting apparatus | — | 1982-03-23 |
| 4313741 | Electric dust collector | Naoki Sugita | 1982-02-02 |
| 4210949 | Device for electrically charging particles | — | 1980-07-01 |
| 4205359 | Safety type electric field curtain apparatus | Masahiro Yamamoto, Yasunari Okamoto, Tsutomu Itoh | 1980-05-27 |