Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12384934 | Surface treatment agent for soft contact lens | Masatomo Takahashi, Shunsuke Sakurai, Hiroko KAWASAKI | 2025-08-12 |
| 11952297 | Extract of plant powder, and water purifier | Ryu Shimada, Masahiko Ito, Masato Hasegawa | 2024-04-09 |
| 11866354 | Extract of plant powder, and water purifier | Ryu Shimada, Masahiko Ito, Masato Hasegawa | 2024-01-09 |
| 11746308 | Soft contact lens treatment solution | Shunsuke Sakurai, Masatomo Takahashi, Norio Iwakiri, Koji Miyamoto | 2023-09-05 |
| 11440821 | Water-purifying agent and water purification method | Masahiko Ito, Ryu Shimada | 2022-09-13 |
| 11161757 | Water purification dispersion, production method for water purification dispersion, and waste water treatment method | Masahiko Ito, Ryu Shimada | 2021-11-02 |
| 10954142 | Water cleaning agent and water cleaning method | Masayuki Nakamura, Ryu Shimada, Kazuhiro Kimura, Masato Hasegawa | 2021-03-23 |
| 9850266 | Phosphorylcholine group-containing compound and phosphorylcholine complex | Takashi Sasaki, Norio Iwakiri, Nobuyuki Yamamoto | 2017-12-26 |
| 6852780 | Composition for optical material, optical material and lenses | Katsuyoshi Tanaka, Toshiaki Takaoka | 2005-02-08 |
| 5798871 | Zoom lens | Atsushi Shibayama, Masatoshi Suzuki | 1998-08-25 |
| 5721642 | Zoom lens | Atsushi Shibayama, Masatoshi Suzuki | 1998-02-24 |
| 5715097 | Zoom lens | Atsushi Shibayama, Masatoshi Suzuki | 1998-02-03 |
| 5668668 | Zoom lens with five lens groups | Atsushi Shibayama, Masatoshi Suzuki | 1997-09-16 |
| 5153283 | Process for producing vinyl polymer or vinylidene polymer | Masashi Mori | 1992-10-06 |
| 4918152 | Process for the production of formed article of aromatic vinyl resin | Masahiko Moritani, Masahiro Niwano, Kazuhiro Yokoo | 1990-04-17 |
| 4753516 | Anti-reflection plate for display device | Toshiki Doi, Yukio Yasunori | 1988-06-28 |