Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357447 | Polymere N-halogenamide auf basis von acryl-und methacrylamid | Hans Zengel, Manfred Bergfeld | 1982-11-02 |
| 4356289 | Polymeric N-halogenoamides on the basis of acrylamide and methacrylamide | Hans Zengel, Manfred Bergfeld | 1982-10-26 |
| 4346233 | Process for the preparation of ureas | Hans Zengel, Manfred Bergfeld | 1982-08-24 |