Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5876983 | Mutant phosphoenolpyruvate carboxylase, its gene, and production method of amino acid | Masakazu Sugimoto, Hiroshi Matsui, Katsura Izui | 1999-03-02 |
| 5849444 | Electrophotographic photoreceptor with aliphatic amine containing electron transporting layer | Akira Kinoshita, Hirofumi Hayata, Toyoko Shibata | 1998-12-15 |
| 5827698 | Lysine decarboxylase gene and method of producing l-lysine | Yoshimi Kikuchi, Hiroyuki Kojima | 1998-10-27 |
| 5766925 | Method of producing L-lysine | Masakazu Sugimoto, Yoshihiro Usuda, Akiko Tanaka, Hiroshi Matsui | 1998-06-16 |
| 5751636 | Semiconductor memory device having data erasing mechanism | Kiyomi Naruke, Seiji Yamada, Etsushi Obi, Masamitsu Oshikiri | 1998-05-12 |
| 5718997 | Electrophotographic photoreceptor | Hirofumi Hayata, Akira Kinoshita, Toyoko Shibata | 1998-02-17 |
| 5710435 | Photomultiplier having a photocathode comprised of semiconductor material | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1998-01-20 |
| 5688671 | Mutant aspartokinase gene | Masakazu Sugimoto, Yuri Ogawa, Akiko Tanaka, Hiroshi Matsui | 1997-11-18 |
| 5680007 | Photomultiplier having a photocathode comprised of a compound semiconductor material | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1997-10-21 |
| 5623445 | Semiconductor memory device having data erasing mechanism | Kiyomi Naruke, Seiji Yamada, Etsushi Obi, Masamitsu Oshikiri | 1997-04-22 |
| 5589309 | Electrophotographic photoreceptor containing perylenes | Akira Kinoshita, Hirofumi Hayata, Tomoo Sakimura | 1996-12-31 |
| 5589314 | Image forming method using an imidazole-perylene electrophotographic photoreceptor | Yoshihiko Etoh, Takeo Oshiba, Asao Matsushima, Hirofumi Hayata, Tomoo Sakimura +1 more | 1996-12-31 |
| 5549997 | Electrophotographic photoreceptor | Asao Matsushima, Takeo Ooshiba, Yoshihiko Etoh, Akira Kinoshita, Tomoo Sakimura | 1996-08-27 |
| 5471051 | Photocathode capable of detecting position of incident light in one or two dimensions, phototube, and photodetecting apparatus containing same | Minoru Niigaki, Katsuyuki Kinoshita, Toru Hirohata, Tuneo Ihara, Masami Yamada +2 more | 1995-11-28 |
| 5452248 | Method of operating a nonvolatile semiconductor memory device | Kiyomi Naruke, Seiji Yamada, Etsushi Obi, Masamitsu Oshikiri | 1995-09-19 |
| 5338637 | Electrophotographic photoreceptor with perylene and styryl compounds | Akira Kinoshita, Kazumasa Watanabe | 1994-08-16 |
| 5336902 | Semiconductor photo-electron-emitting device | Minoru Nigaki, Tuneo Ihara, Toru Hirohata, Kimitsugu Nakamura, Norio Asakura +4 more | 1994-08-09 |
| 5294512 | Pyrene compound, manufacturing method therefor and electrophotographic photoreceptor containing the pyrene compound | Akira Kinoshita | 1994-03-15 |
| 5222074 | Thermal decomposition cell | Kiyoshi Uchiyama, Tatsuo Yokotsuka, Akira Takamori, Masato Nakajima | 1993-06-22 |
| 5190891 | Method for fabricating a semiconductor laser device in which the P-type clad layer and the active layer are grown at different rates | Tatsuo Yokotsuka, Akira Takamori, Masato Nakajima | 1993-03-02 |
| 5138191 | Photoemitter | Yoshihiko Mizushima, Toru Hirohata, Tsuneo Ihara, Minoru Niigaki, Kenichi Sugimoto +2 more | 1992-08-11 |
| 5068815 | Optical full adder | Yoshihiko Mizushima, Kazutoshi Nakajima, Toru Hirohata, Takashi Iida, Yoshihisa Warashina +2 more | 1991-11-26 |