Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272424 | Process for the preparation of vinyl chloride-based resins | Hajime Kitamura, Koji Azuma | 1981-06-09 |
| 4232141 | Method for the preparation of vinyl chloride polymers | Shunichi Koyanagi, Hajime Kitamura | 1980-11-04 |
| 4189552 | Method for preparing vinyl chloride polymers | Satoshi Kuwata, Kinya Ogawa | 1980-02-19 |