| 10399935 |
Method for producing 3-mercaptopropionic acid, and methods using same for producing carboxylic acid ester compound having mercapto group and thiourethane-based optical material |
Dong Gyu Jang |
2019-09-03 |
| 10202483 |
Polymerizable composition, molded product, and use thereof |
Naoki Shinohara, Nobuo Kawato, Dong Gyu Jang |
2019-02-12 |
| 10067266 |
Method of producing resin for thiourethane-based optical material using general-purpose polyisocyanate compound, resin composition for thiourethane-based optical material and thiourethane-based optical material including resin produced by the method |
Dong Gyu Jang, Jong Hyo Kim |
2018-09-04 |
| 9658364 |
Method for storing episulfide compound and method for preparing thioepoxy-based optical material using said episulfide compound |
Dong Gyu Jang, Jong Hyo Kim, Bong-Keun So, Jin-Moo Seo |
2017-05-23 |
| 9522879 |
Method for preparing polythiol compound and polymeric composition for optical material comprising same |
Dong Gyu Jang, Jong Hyo Kim |
2016-12-20 |
| 9372281 |
Method for preparing thioepoxy-based optical material and polymerizable composition thereof |
Dong Gyu Jang, Jong Hyo Kim |
2016-06-21 |
| 9052436 |
Method for manufacturing resin for urethane-based optical material, resin composition for same, and optical material manufactured thereby |
Dong Gyu Jang, Jong Hyo Kim |
2015-06-09 |