Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239865 | Polyvinyl (dialkylthiocarbamoylthio)acetate resin, method for producing same and heavy metals-removing agent comprising same | Ryohkichi Tarao, Kanji Kaku, Masaki Hayashi, Takao Nakamura | 1980-12-16 |