Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9068964 | Blood cell counter and cell counting method | Nobuhiro Kitagawa, Masahiko Oguro | 2015-06-30 |
| 7903976 | Optical element integrated module | Hiromi Tsuji, Masatoshi Kagawa | 2011-03-08 |
| 7689026 | Method for testing image processing circuit, particle image analyzer, and storage medium | — | 2010-03-30 |
| 7643143 | Particle image analyzing apparatus | Katsuaki Yamaguchi | 2010-01-05 |
| 7024118 | Optical time-division multiplexer using optical fiber for phase adjustment | — | 2006-04-04 |
| 6747776 | Semiconductor optical modulator, optical multiplexing module, and control method thereof | Yukihiro Ozeki | 2004-06-08 |
| 6483634 | Optical amplifier | Andrew Pratt | 2002-11-19 |
| 6307617 | Initial alignment system for use in manufacturing an optical filter | Akihiko Nishiki | 2001-10-23 |
| 5914207 | Alignment method for optical fibers for use in manufacturing an optical filter | Akihiko Nishiki | 1999-06-22 |
| 5159238 | Gas discharge panel | Ichiro Koiwa, Yoshitaka Terao, Hideo Sawai, Naoyuki Shiozawa | 1992-10-27 |
| 4578216 | Shampoo composition containing amino acid-anionic and amphoteric surface active agents | Takeo Okumura | 1986-03-25 |
| 4539403 | Process for the preparation of a 2-alkyl-4-amino-5-aminomethylpyrimidine | Keigo Nishihira, Hiroyuki Sawada, Shuji Tanaka, Mamoru Nakai, Hiroshi Yoshida +2 more | 1985-09-03 |
| 4492792 | Process for preparing 4-amino-5-dialkoxy-methylpyrimidine derivatives | Keigo Nishihira, Hiroyuki Sawada, Shuji Tanaka, Mamoru Nakai, Hiroshi Yoshida +1 more | 1985-01-08 |
| 4467109 | Process for continuous preparation of diester of oxalic acid | Susumu Tahara, Keigo Nishihira, Masaoki Matsuda, Katsuhiko Mizutare | 1984-08-21 |
| 4461909 | Process for continuously preparing a diester of oxalic acid | Susumu Tahara, Keigo Nishihira, Masaoki Matsuda, Katsuhiko Mizutare | 1984-07-24 |
| 4453026 | Process for continuously preparing ethylene glycol | Susumu Tahara, Keig Nishihira, Masaoki Matsuda, Katsuhiko Mizutare | 1984-06-05 |
| 4421925 | 4-Alkoxy-1,3-dioxane-5-carbonitriles and process for preparing the same | Sumio Umemura, Keigo Nishihira, Hiroyuki Sawada, Shuji Tanaka, Mamoru Nakai +2 more | 1983-12-20 |
| RE31245 | Process for preparing a diester of oxalic acid in the gaseous phase | Keigo Nishihira, Masaoki Matsuda, Shinichiro Uchiumi, Kenji Nishimura | 1983-05-17 |
| 4260810 | Process for preparing diesters of dicarboxylic acids | Sumio Umemura, Kanenobu Matsui, Yoshinari Ikeda, Katsuro Masunaga, Takumi Kadota +2 more | 1981-04-07 |
| 4256908 | Process for preparing diesters of malonic acid | Kenji Nishimura, Shinichi Furusaki, Yasushi Shiomi, Keigo Nishihira, Masayoshi Yamashita | 1981-03-17 |
| 4229589 | Process for preparing a diester of oxalic acid | Kenji Nishimura, Shinichiro Uchiumi, Keigo Nishihira, Masayoshi Yamashita, Hiroshi Itatani | 1980-10-21 |
| 4229591 | Process for preparing a diester of oxalic acid in the gaseous phase | Kenji Nishimura, Keigo Nishihira, Masaoki Matsuda, Shinichiro Uchiumi | 1980-10-21 |
| 4224205 | Polyvinyl alcohol optical brightening composition | Yunosuke Nakagawa | 1980-09-23 |