Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6509490 | Method of purifying isophthalonitrile | Takuji Shitara, Fumisada Kosuge, Kazuhiko Amakawa | 2003-01-21 |
| 4354881 | Method for antirust treatment of steel stocks | Keiichi Tanikawa, Tatsurou Obi, Isao Manabe, Akiyoshi Inubushi, Chiaki Maeda | 1982-10-19 |