Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814101 | Zwitterionic polymers and their use in hair treatment preparations | Ludwig Schieferstein, Horst Hoeffkes, Karl Giede, Peter Busch | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814101 | Zwitterionic polymers and their use in hair treatment preparations | Ludwig Schieferstein, Horst Hoeffkes, Karl Giede, Peter Busch | 1989-03-21 |