Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4782106 | Rubber adhesive mixture containing Ca(OH)2 for direct bonding to glass or metallic articles | Holger Hoffmann, Henning Umland | 1988-11-01 |
| 4696753 | Lubricant for a tire and wheel assembly | Henning Umland | 1987-09-29 |