Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6521007 | Clean box | Akira Tanaka, Kazuo Ohkubo, Yoko Suzuki | 2003-02-18 |
| 6228135 | Purification of very slightly contaminated air within a clean room | Takanobu Sugo, Kunio Fujiwara, Takeshi Takai, Atsushi Kobayashi | 2001-05-08 |
| 6009739 | Method for evaluating performance of chemical filter for cleaning gas | Kunio Fujiwara, Takeshi Takai, Mari Katsumine, Kazuo IWAKI, Hideo Kawazu | 2000-01-04 |
| 5743940 | Process for producing gas adsorbent | Takanobu Sugo, Jiro Okamoto, Kunio Fujiwara, Toshiaki Fujii | 1998-04-28 |
| 5708951 | Toner image fixing device | Hideo Saito, Kazumi Inaba, Keitaro Sonoguchi | 1998-01-13 |
| 5425866 | Electrically regenerable demineralizing apparatus | Takanobu Sugo, Isao Ishigaki, Kunio Fujiwara, Hideo Kawazu, Takayuki Saito | 1995-06-20 |
| 5308467 | Electrically regenerable demineralizing apparatus | Takanobu Sugo, Isao Ishigaki, Kunio Fujiwara, Hideo Kawazu, Takayuki Saito | 1994-05-03 |
| 5251072 | Image reader | Hiroaki Fukuoka, Junji Kawano, Yoshikazu Miyashita, Hitoshi Nakagawa | 1993-10-05 |
| 4980335 | Acidic gas adsorber having a metal phthalocyanine on an ion exchanger | Takanobu Sugo, Jiro Okamoto, Kunio Fijiwara, Toshiaki Fujii | 1990-12-25 |