Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5330846 | Heat-curable, aqueous synthetic resin mixtures for coating woodworking materials | Hans Etling, Walter Pfalzgraf, Walter Pitteroff, Otto Wittmann | 1994-07-19 |
| 5047466 | Amino resin solutions having low electrical conductivity | Gerd Busse, Jakob Decher, Edgar Haeussler, Otto Wittmann | 1991-09-10 |