Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6224684 | Method for preparing raffinose crystals and equipment for the same | Hiroshi Inoue, Yoshihiro Semba, Yuichi Ohwada | 2001-05-01 |
| 5569749 | Organic photoconductive material and a photosensitive material for electronic photography using it | Hisao Kouno, Shyouichi Takahashi, Kazuhiro Higashide, Nakaji Komiyama, Masaru Hasegawa | 1996-10-29 |
| 5506346 | Organic photoconductive material and a photosensitive material for electronic photography using it | Hisao Kouno, Shyouichi Takahashi, Kazuhiro Higashide, Nakaji Komiyama, Masaru Hasegawa | 1996-04-09 |
| 5344736 | Disazo electrophotographic photoreceptor | Nakaji Komiyama, Hisao Kouno, Kazuhiro Higashide, Masaru Hasegawa | 1994-09-06 |
| 4931349 | Electrophotographic photoreceptor having an azo compound | Masaru Hasegawa, Hisao Kohno, Toshifumi Sekino, Tetsuhiro Umezaki, Norio Tanaka | 1990-06-05 |
| 4912001 | Electrophotographic photoreceptor comprising azo compound and coupler | Hisao Kouno, Hiroaki Saikatsu, Tetsuhiro Umezaki, Norio Tanaka, Toshifumi Sekino +3 more | 1990-03-27 |