Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5811488 | Polyvinyl alcohol powder | Naoto NARUMOTO, Takanori Kitamura, Yuji Takenouchi, Hisamichi Yanai | 1998-09-22 |
| 4594449 | Process for producing terephthalic acid suitable for use in direct polymerization | Toshiaki Takuma, Takayuki Tsumura, Katsuya Murakami, Yasue Nakajima | 1986-06-10 |