Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868239 | Casting resins on the basis of acrylic acid esters | Horst Hanisch | 1989-09-19 |
| 4853438 | Water-soluble polymers bearing quaternary ammonium or pyridinium groups and alkoxysilyl groups, a method for their preparation, and the use thereof | Horst Hanisch | 1989-08-01 |