Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321177 | Process for the vapor-phase thermal cracking of dicyclopentadiene and a process for the manufacture of high purity dicyclopentadiene | Takao Nakamura, Masaru Kawakita | 1994-06-14 |
| 5206358 | Process for manufacturing petroleum resin | Akira Takahashi, Fumio Ochiai, Yo-ichi Ikeda | 1993-04-27 |
| 4952639 | Novel hydrogenated petroleum resin and process for preparing the same | Akira Takahashi, Koichi Murakami | 1990-08-28 |