Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4250031 | Phenolic chelate resin and method of adsorption treatment | Hiroyuki Uejima, Masahide Hirai | 1981-02-10 |
| 4197391 | Phenolic chelate resin and method of adsorption treatment | Hiroyuki Uejima, Masahide Hirai | 1980-04-08 |