Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830632 | Aqueous composition from a sulfonated phenol, an amine and a tanning salt, process for the production thereof and use thereof as a tanning agent | — | 1989-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830632 | Aqueous composition from a sulfonated phenol, an amine and a tanning salt, process for the production thereof and use thereof as a tanning agent | — | 1989-05-16 |