Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12240378 | Light emitting device | Motoki Maekawa, Ryosuke USAMI, Yohei ISHIZU, Mitsutaka SAKOH | 2025-03-04 |
| 11505041 | Vehicle light-adjusting window and vehicle light-adjusting window system | Motoki Maekawa, Mitsutaka Sako, Junichi Baba | 2022-11-22 |
| 10877345 | Light control film and vehicle body panel including the same | Kanji Kobayashi, Kenji Okamoto, Nozomu WASHIO, Koji Mishima, Shouhei HARADA +1 more | 2020-12-29 |
| 9738675 | Water-soluble photochromic compound | Hiroaki Tokiwa, Kiyoshi Ikeda, Tadamune Otsubo | 2017-08-22 |
| 8648206 | Light-activated actuator element | Shizuka Takami | 2014-02-11 |
| 8444450 | Method for alternately expressing color-memorizing photochromic function in toy element, and an alternately color-memorizing photochromic toy | Yutaka Shibahashi, Michiyuki Yasuda | 2013-05-21 |
| 7575386 | Color-memorizing photochromic writing instrument, color-memorizing photochromic writing instrument set using the same and method for alternately expressing color-memorizing photochromic function of writing image | Yutaka Shibahashi, Michiyuki Yasuda | 2009-08-18 |
| 7101497 | Photochromic material and color dose meter using the same | Yuki Tanaka, Naoto Kijima, Shinichirou Nakamura, Setsuko Irie | 2006-09-05 |
| 7057054 | Photochromic material | — | 2006-06-06 |
| 6979413 | Optical recording material | Yuriko Kaida | 2005-12-27 |
| 6884553 | Near-field optical recording medium and near-field optical recording method | Shuichi Maeda | 2005-04-26 |
| 6660868 | Photo-induced phase transition organic material | — | 2003-12-09 |
| 5889751 | Method for optically controlling an optical device and an optical control device utilizing the method | Tsuyoshi Tsujioka, Minoru Kume | 1999-03-30 |
| 5622812 | Optical material | Fumio Tatezono, Toshio Harada, Meguru Ohara | 1997-04-22 |
| 5605779 | Optical memory medium | Kazuo Van | 1997-02-25 |
| 5592461 | Methods of recording and reproducing information using an optical recording medium | Tsuyoshi Tsujioka | 1997-01-07 |
| 5468874 | Benzothiophene/indole-substituted maleimide derivatives, photochromic material comprising said derivatives and optical recording material using the same material | Fumio Sugai | 1995-11-21 |
| 5443940 | Optical recording material and optical recording medium employing the same | Fumio Tatezono, Toshio Harada, Meguru Ohara | 1995-08-22 |
| 5405656 | Solution for catalytic treatment, method of applying catalyst to substrate and method of forming electrical conductor | Futoshi Ishikawa, Koji Kondo | 1995-04-11 |
| 5398223 | Reproducing method and reproducing apparatus for optical recording medium | Tsuyoshi Tsujioka | 1995-03-14 |
| 5376511 | Optical recording medium | Fumio Tatezono, Toshio Harada, Koutaro Matsuura | 1994-12-27 |
| 5316900 | Optical recording medium having a constant birefringent property and an alterable photochromic property | Tsuyoshi Tsujioka, Fumio Tatezono, Koutaro Matsuura | 1994-05-31 |
| 5294522 | Photochromic compound | Manabu Uchida | 1994-03-15 |
| 5242491 | Photo-induced reversible, discontinuous volume changes in gels | Akira Mamada, Toyoichi Tanaka, Dawan Kungwatchakun | 1993-09-07 |
| 4882428 | Azaporphyrin compounds | — | 1989-11-21 |