Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7196232 | 4,4′-dihydroxyphenyl bicyclohexenes | Kouji Satomi, Hiroyasu Oono | 2007-03-27 |
| 6992227 | Process for producing 1, 1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kazuhiko Yao, Yoichiro Isota, Toru Nakaguchi | 2006-01-31 |
| 6972344 | Method of producing pure 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kazuhiko Yao | 2005-12-06 |
| 6951966 | Orthoalkylation catalyst for phenol and process for producing orthoalkylated phenol with use thereof | Mitsuhiro Higashi, Masamitsu Tanaka | 2005-10-04 |
| 6875896 | Method for producing high purity 1,1-bis(4-hydroxyphenyl)cyclohexanes | Kazuhiko Yao, Tooru Nakaguchi | 2005-04-05 |
| 6720460 | Hydroxyphenyl adamantanes and process for the production of the same | Akira Yoshikawa, Kentaro Watanabe, Kazuhiko Yao, Miwa Hazama | 2004-04-13 |
| 6673974 | Process for production of 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kazuhiko Yao, Yoichiro Isota, Toru Nakaguchi | 2004-01-06 |
| 6673973 | Method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kazuhiko Yao, Yoichiro Isota, Toru Nakaguchi | 2004-01-06 |
| 6673975 | Method for producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kazuhiko Yao, Yoichiro Isota, Toru Nakaguchi | 2004-01-06 |
| 6512149 | Method for removing butyl groups from butyl phenol compounds | Kazuhiko Yao, Mitsuhiro Higashi | 2003-01-28 |
| 6326522 | Process for production of 1,3-di(2-p-hydroxyphenyl-2-propyl)benzene | Toru Nakaguchi, Takafumi Tsujigami, Kenzo Tsujimoto, Kiyoshi Kumaki | 2001-12-04 |
| 6313351 | Process for producing alicyclic monoketones and process for producing alicyclic diketones | Norimoto Kiya, Shinsaku Kawasaki, Kenji Sugiyama, Toyokazu Kitaura | 2001-11-06 |