Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9657133 | Rigid polyurethane foams | Holger Seifert, Louis Du Rieu, Werner Wiegmann, Guenter Matzke | 2017-05-23 |
JK
Johann Klassen
Overall (2017): #367,717 of 506,227Top 75%
1
Patents 2017