Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12360405 | Optical semiconductor device | Yuki Kamata, Hiroyuki Tarumi, Koichi Oyama, Keizo Takemasa, Yutaka Ohnishi | 2025-07-15 |
| 12149053 | Semiconductor device | Hitoshi Yamada, Yuki Kamata, Koichi Oyama, Yutaka Ohnishi, Keizo Takemasa | 2024-11-19 |
| 11764546 | Semiconductor laser device | Yuki Kamata, Hiroyuki Tarumi, Koichi Oyama, Keizo Takemasa, Yutaka Onishi | 2023-09-19 |
| 9865771 | Semiconductor light-emitting element | Takeo Kageyama, Keizo Takemasa, Mitsuru Sugawara, Richard Hogg, Siming W. Chen | 2018-01-09 |
| 8637951 | Semiconductor light receiving element and optical communication device | Daisuke Okamoto, Junichi Fujikata | 2014-01-28 |
| 8625193 | Optical semiconductor device | — | 2014-01-07 |
| 8467637 | Waveguide path coupling-type photodiode | Junichi Fujikata, Jun Ushida, Daisuke Okamoto, Keishi Ohashi, Tai Tsuchizawa +1 more | 2013-06-18 |
| 8422837 | Semiconductor device | Junichi Fujikata, Jun Ushida, Daisuke Okamoto | 2013-04-16 |
| 8363989 | Semiconductor optical interconnection device and semiconductor optical interconnection method | Daisuke Okamoto, Junichi Fujikata, Jun Ushida | 2013-01-29 |
| 8269303 | SiGe photodiode | Junichi Fujikata, Toru Tatsumi, Akihito Tanabe, Jun Ushida, Daisuke Okamoto | 2012-09-18 |
| 8183656 | Photodiode | Daisuke Okamoto, Junichi Fujikata, Keishi Ohashi | 2012-05-22 |
| 8133117 | Game apparatus, game message displaying method and storage medium storing game program | Kenshiro Ueda | 2012-03-13 |
| 8023832 | Light receiving circuit and digital system | Masayuki Mizuno, Keishi Ohashi, Koichi Nose | 2011-09-20 |
| 7709235 | 5-Substituted hydantoin racemase, DNA encoding the same, recombinant DNA, transformed cell, and process for production of optically active N-carbamylamino acid or optically active amino acid | Satohiro Yanagisawa, Hirokazu Nanba, Makoto Ueda, Naoto Noro | 2010-05-04 |
| 6461842 | Process for producing coenzyme Q10 | Hideyuki Matsuda, Makoto Kawamukai, Kazuyoshi Yajima, Yasuhiro Ikenaka, Junzo Hasegawa +1 more | 2002-10-08 |
| 6078062 | II-VI compound semiconductor based light emitting device having recombination regions spatially arrayed in a planar direction of the active layer to prevent crack propagation | Masaru Kuramoto, Hiroshi Iwata | 2000-06-20 |
| 6052400 | Variable wavelength semiconductor laser | Yoshihiro Nanbu | 2000-04-18 |
| 5482815 | Silver halide photographic photosensitive material | Kunihiro Nakagawa, Shoji Akaiwa, Seiichi Sumi | 1996-01-09 |
| 4727341 | Optical modulator | Hiroyoshi Rangu | 1988-02-23 |