Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6582824 | Sealant composition, article and method | Stefan Weigl, Shuichi Kitano, Kotaro Shinozaki, Tomohiro Koiwa, Kazuyoshi Shiozaki | 2003-06-24 |
| 4919680 | High-extraction chrome tanning process | Bernhard Wehling, Bernd Makowka, Heinz Klein, Helga Rosentreter | 1990-04-24 |