Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12064908 | Injection molding apparatus, injection molding method and production method of molded product using injection molding apparatus, and laminated lens | Shinsuke Ito, Kouji Suesugi | 2024-08-20 |
| 11827736 | Polythiol composition, polymerizable composition, resin, molded body, optical material, and lens | Shotaro NAKANO | 2023-11-28 |
| 11753367 | Xylylene diisocyanate composition, polymerizable composition for optical material, resin, molded article, optical element, and lens | Masayuki TAKAGUCHI | 2023-09-12 |
| 11248077 | Polymerizable composition for optical material and molded product | Shinichiro Kadowaki, Nobuo Kawato | 2022-02-15 |
| 10921489 | Polymerizable composition for optical material, optical material obtained from the composition, and plastic lens | Nobuo Kawato | 2021-02-16 |
| 10858473 | Polythiol composition, polymerizable composition for optical material and use thereof | Takeshi Nishimura | 2020-12-08 |
| 10858472 | Polythiol composition, polymerizable composition for optical material and use thereof | Takeshi Nishimura | 2020-12-08 |
| 10844010 | Process for producing (poly)sulfide compound and process for producing episulfide compound | Koichi Tokunaga, Chitoshi Shimakawa, Shigetoshi Kuma | 2020-11-24 |
| 10266636 | Process for producing episulfide compound for optical material, episulfide-containing composition, and polymerizable composition for optical material including the same composition | Hidetaka Tsukada | 2019-04-23 |
| 9777103 | Polythiol composition, polymerizable composition for optical material and use thereof | Takeshi Nishimura | 2017-10-03 |
| 9637584 | Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof | Takeshi Nishimura | 2017-05-02 |
| 9605105 | Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof | Takeshi Nishimura | 2017-03-28 |
| 9181179 | Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof | Takeshi Nishimura | 2015-11-10 |
| 9181180 | Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof | Takeshi Nishimura | 2015-11-10 |
| 8434866 | Polymerizable composition for optical material, optical material, and method for preparing the optical material | Hidetoshi Hayashi, Akinori Ryu, Hironori Kuboi, Mamoru Takashina, Seiichi Kobayashi +1 more | 2013-05-07 |
| 8354529 | Polyamine derivative and polyol derivative | Naruyoshi Mita, Mitsuaki Chida, Kengo Otsuka, Naoshi Nagai, Takaaki Yamazaki +1 more | 2013-01-15 |
| 8076478 | Polyamine derivative and polyol derivative | Naruyoshi Mita, Mitsuaki Chida, Kengo Otsuka, Naoshi Nagai, Takaaki Yamazaki +1 more | 2011-12-13 |
| 8044165 | Process for producing resin for optical material | Shigetoshi Kuma, Mamoru Tanaka, Seiichi Kobayashi | 2011-10-25 |
| 6933411 | Aromatic diamine and polyimide thereof | Naoshi Nagai | 2005-08-23 |
| 6737503 | Aromatic diamine and polyimide thereof | Yoichi Kodama, Minehiro Mori, Naoshi Nagai | 2004-05-18 |