Issued Patents All Time
Showing 76–100 of 121 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6861563 | Process for preparation of cyclododecanone | Ryoji Sugise, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura | 2005-03-01 |
| 6844464 | Process for producing alkyl nitrite | Ryoji Sugise, Hirofumi Ii, Kazuaki Mii | 2005-01-18 |
| 6763216 | Developing device and image forming apparatus including the same | Mikio Ishibashi | 2004-07-13 |
| 6740729 | Process for producing polycarbonate | Shinichi Yoshida, Tamiko Nishihira | 2004-05-25 |
| 6633010 | Compact, sealed pressure switch | Yoshihiko Mikawa | 2003-10-14 |
| 6554967 | Method of refining dihydroxyaryl compound | Genji Koga, Hiroshi Kofuji, Tetsuro Kawashita | 2003-04-29 |
| 6518461 | Method of continuously producing a cyclododecanone compound | Ryoji Sugise, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura | 2003-02-11 |
| 6472498 | Diaryl carbonate product and production of polycarbonate | Ryoji Sugise, Kohichi Kashiwagi, Takashi Doi, Hirofumi Ii, Masayuki Nishio +3 more | 2002-10-29 |
| 6417404 | Process for continuously producing a cyclododecanone compound | Ryoji Sugise, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura | 2002-07-09 |
| 6388140 | Method and producing cyclododecanone compound | Ryoji Sugise, Kohichi Kashiwagi, Takashi Doi, Masayuki Nishio, Sadao Niida +1 more | 2002-05-14 |
| 6191302 | Process for producing alkyl nitrite | Keigo Nishihira, Shinichi Yoshida | 2001-02-20 |
| 6018072 | Process for producing a diaryl oxalate | Keigo Nishihira, Yuki Nishida, Satoru Fujitsu | 2000-01-25 |
| 6005687 | Imaging apparatus having different motors for separating and reading documents | Yasuhiro Kawashima | 1999-12-21 |
| 5922827 | Process for producing a polycarbonate | Keigo Nishihira, Katsumasa Harada, Ryoji Sugise, Akinori Shiotani, Katsutoshi Washio | 1999-07-13 |
| 5892091 | Catalyst for decarbonylation reaction | Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Satoru Fujitsu, Ryoji Sugise +4 more | 1999-04-06 |
| 5892089 | Process for preparing diaryl carbonate | Katsumasa Harada, Ryoji Sugise, Koichi Kashiwagi, Yoichi Imbe, Takashi Doi +2 more | 1999-04-06 |
| 5869729 | Method of producing an ester compound | Keigo Nishihira, Yuki Nishida, Noriaki Manada, Toshio Kurafuji, Masato Murakami | 1999-02-09 |
| 5834615 | Process for producing diaryl carbonate | Keigo Nishihira, Katsumasa Harada, Ryoji Sugise | 1998-11-10 |
| 5811573 | Process for producing a diaryl carnonate | Keigo Nishihira, Yuki Nishida, Ii Hirofumi, Satoru Fujitsu, Katsumasa Harada +3 more | 1998-09-22 |
| 5742013 | Two-way lever switch | Satoshi Myojin | 1998-04-21 |
| 5731453 | Process for producing a diaryl carbonate | Keigo Nishihira, Yuki Nishida, Hirofumi Ii, Satoru Fujitsu, Katsumasa Harada +3 more | 1998-03-24 |
| 5705677 | Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct | Keigo Nishihira, Yuki Nishida, Hirofumi Ii, Satoru Fujitsu | 1998-01-06 |
| 5681669 | Electrolyte for lithium secondary battery | Masaki Yoshio, Hiroyoshi Nakamura, Hideya Yoshitake | 1997-10-28 |
| 5648510 | Process for preparation of diaryl carbonate | Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Satoru Fujitsu, Ryoji Sugise +2 more | 1997-07-15 |
| 5631396 | Process for continuously producing dimethyl carbonate | Keigo Nishihira, Shinichi Yoshida, Yutaka Asada | 1997-05-20 |