Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840599 | Thiol-containing composition for optical material and polymerizable composition for optical material | Takeshi Nishimura, Masayuki Furuya | 2023-12-12 |
| 11254783 | Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resin | Satoshi Yamasaki, Daisuke Hasegawa, Hirokazu Morita, Hideaki Otsuka, Tatsuya Nakashima +2 more | 2022-02-22 |
| 10844010 | Process for producing (poly)sulfide compound and process for producing episulfide compound | Koichi Tokunaga, Chitoshi Shimakawa, Masaru Kawaguchi | 2020-11-24 |
| 10774038 | Process for producing cyanonorbornene | Tomoya Sanda | 2020-09-15 |
| 10696627 | Process for producing pentaerythritol mercaptocarboxylic acid ester, polymerizable composition, resin, optical material, and lens | Masayuki Furuya, Takeshi Nishimura | 2020-06-30 |
| 10640605 | Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resin | Satoshi Yamasaki, Daisuke Hasegawa, Hirokazu Morita, Hideaki Otsuka, Tatsuya Nakashima +2 more | 2020-05-05 |
| 10399930 | Purification method of aldehyde compound | Naoyuki Kakinuma, Masayuki Furuya, Michiharu Sakata, Koichi Tokunaga | 2019-09-03 |
| 10399929 | Purification method of aldehyde compound | Naoyuki Kakinuma, Masayuki Furuya, Michiharu Sakata, Koichi Tokunaga | 2019-09-03 |
| 10196501 | Polymerizable composition for optical material, optical material produced from same, and process for producing same | Takayuki Hanawa | 2019-02-05 |
| 10131767 | Polymerizable composition for optical material, optical material obtained from polymerizable composition, and manufacturing method of optical material | Shinsuke Ito, Nobuo Kawato, Kouji Suesugi, Tatsuya Ogawa, Toshiya Hashimoto +1 more | 2018-11-20 |
| 9809533 | Purification method of aldehyde compound | Naoyuki Kakinuma, Masayuki Furuya, Michiharu Sakata, Koichi Tokunaga | 2017-11-07 |
| 9678246 | Polymerizable composition for optical material | Nobuo Kawato, Tatsuya Ogawa, Toshiya Hashimoto, Mamoru Tanaka | 2017-06-13 |
| 9487475 | Preparation method of aldehyde compound with limited amount of acrylonitrile | Koichi Tokunaga, Naoyuki Kakinuma | 2016-11-08 |
| 9475760 | Preparation method of aldehyde compound using a metal compound and a phosphorus compound | Koichi Tokunaga, Naoyuki Kakinuma | 2016-10-25 |
| 9464154 | Process for producing polyurethane resin | Nobuo Kawato, Tatsuya Ogawa, Toshiya Hashimoto, Mamoru Tanaka | 2016-10-11 |
| 9227925 | Process for producing aldehyde compounds | Michiharu Sakata, Kouichi Tokunaga, Chitoshi Shimakawa, Naoyuki Kakinuma, Masayuki Furuya +1 more | 2016-01-05 |
| 8772441 | Polyurethanes polymerizable composition and method for producing optical resin of the same | Koichi Tokunaga, Hiroyuki Morijiri, Seiichi Kobayashi | 2014-07-08 |
| 8044165 | Process for producing resin for optical material | Masaru Kawaguchi, Mamoru Tanaka, Seiichi Kobayashi | 2011-10-25 |
| 7396900 | Thiourethane-based optical material | Mamoru Tanaka, Munehito Funaya, Seiichi Kobayashi | 2008-07-08 |
| 7244808 | Thiourethane-based optical material | Mamoru Tanaka, Munehito Funaya, Seiichi Kobayashi | 2007-07-17 |
| 6770735 | Process for preparing a thiol compound | Mamoru Tanaka, Seiichi Kobayashi, Yoshinobu Kanemura | 2004-08-03 |
| 6770734 | Polythiol compound | Mamoru Tanaka, Seiichi Kobayashi, Yoshinobu Kanemura | 2004-08-03 |
| 6596841 | Polythiol, polymerizable composition, resin and lens, and process for preparing thiol compound | Mamoru Tanaka, Seiichi Kobayashi, Yoshinobu Kanemura | 2003-07-22 |