Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720460 | Hydroxyphenyl adamantanes and process for the production of the same | Akira Yoshikawa, Kenji Ekawa, Kentaro Watanabe, Miwa Hazama | 2004-04-13 |
| 6673973 | Method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kenji Ekawa, Yoichiro Isota, Toru Nakaguchi | 2004-01-06 |
| 6673974 | Process for production of 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kenji Ekawa, Yoichiro Isota, Toru Nakaguchi | 2004-01-06 |
| 6673975 | Method for producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane | Kenji Ekawa, Yoichiro Isota, Toru Nakaguchi | 2004-01-06 |