Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818440 | Novel polyether carboxylic acid derivatives, as well as their uses | Werner Schafer, Rolf Schafer, Doris Schafer, Johan G. Aalbers | 1989-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818440 | Novel polyether carboxylic acid derivatives, as well as their uses | Werner Schafer, Rolf Schafer, Doris Schafer, Johan G. Aalbers | 1989-04-04 |