Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885229 | Photopolymerizable compositions | Fumio Takenaka, Yoshihiro Ohtsuka | 1989-12-05 |
| 4590145 | Photopolymerization initiator comprised of thioxanthones and oxime esters | Masanori Itoh, Fumio Takenaka | 1986-05-20 |