Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4224421 | Water-soluble, crosslinked nitrogen-containing condensation products | Werner Streit, Rolf Fikentscher, Karl Gans, Gerhard Welzel, Klaus Glaser | 1980-09-23 |
ES
Emil Schaefer
Overall (All Time): #4,120,377 of 4,157,543Top 100%
1
Patents All Time