Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5790450 | Semiconductor memory device having bit lines widely spaced without sacrifice of narrow pitch of source/drain lines of memory cells | Teiichiro Nishizaka | 1998-08-04 |
| 5772891 | Water treating method for treating waste water by using ion exchange resin | Yoshihiro Hamaguchi, Shigeki Matumoto | 1998-06-30 |
| 5707514 | Water treating method and apparatus treating waste water by using ion exchange resin | Yoshihiro Hamaguchi, Shigeki Matumoto | 1998-01-13 |
| 5702604 | Apparatus and method for waste water treatment utilizing granular sludge | Atsushi Yokotani, Shirou Imazu | 1997-12-30 |
| 5702594 | Apparatus for treatment of waste water and/or exhaust gases containing fluorine and surface active agents | Masaki Kataoka, Kazuyuki Sakata, Shirou Imazu | 1997-12-30 |
| 5676836 | Method for waste water treatment using charcoal biologically activated | Shirou Imazu, Takashi Fujiwara | 1997-10-14 |
| 5632885 | Hydrogen peroxide removal equipment capable of treating both waste water and waste gas | Atsushi Yokotani | 1997-05-27 |
| 5625586 | Semiconductor memory having a plurality of memory banks and sub-bit lines which are connected to a main bit line via MOS transistors whose gates are commonly connected to a selection line | Teiichiro Nishizaka, Kazutaka Otsuki | 1997-04-29 |
| 5599443 | Apparatus for waste water treatment using charcoal biologically activated | Shirou Imazu, Takashi Fujiwara | 1997-02-04 |
| 5580458 | Method for waste water treatment using calcium carbonate mineral and microorganisms in combination | Yoshihiro Hamaguchi, Shunji Hosoda, Kazuyuki Sakata, Takashi Imai, Shigetoshi Okatani +6 more | 1996-12-03 |
| 5578214 | Apparatus and method for waste water treatment utilizing aerobic and anaerobic microorganisms and capable of exhaust gas treatment | Masaki Kataoka, Shirou Imazu, Kenji Matuura | 1996-11-26 |
| 5480537 | Apparatus for waste water treatment using calcium carbonate mineral and microorganisms in combination | Yoshihiro Hamaguchi, Shunji Hosoda, Kazuyuki Sakata, Takashi Imai, Shigetoshi Okatani +6 more | 1996-01-02 |
| 5423988 | Method and apparatus for treating developer-containing waste water at multiple biological treatment stages | Yoshihiro Hamaguchi, Shunji Hosoda, Kazuyuki Sakata, Satoshi Nishio, Takamasa Uchiyama | 1995-06-13 |
| 5354517 | Process for the preparation of substrates for optical disk | Takehiko Kitamura | 1994-10-11 |
| 5035802 | Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter | Kimio Yamamoto, Masanobu Watanabe, Kojiro Kan, Yoshio Nakayama | 1991-07-30 |
| 4983717 | Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter | Kimio Yamamoto, Masanobu Watanabe, Kojiro Kan, Yoshio Nakayama | 1991-01-08 |
| 4513049 | Electret article | Fukashi Kagawa | 1985-04-23 |