Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5990269 | Copolymer of vinylpyrrolidone and vinylimidazole | Karin Neubecker, Stephan Kothrade | 1999-11-23 |
SS
Stefan Stien
Tokyo Ohka Kogyo Co.: 1 patents #437 of 684Top 65%
Overall (All Time): #3,668,644 of 4,157,543Top 90%
1
Patents All Time