Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6554967 | Method of refining dihydroxyaryl compound | Shuji Tanaka, Genji Koga, Hiroshi Kofuji | 2003-04-29 |
| 5380906 | Process for preparing carbonic diester | Keigo Nishihira, Shuji Tanaka, Kunioki Kodama, Takayoshi Kaneko, Yuki Nishida +2 more | 1995-01-10 |