Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4290925 | Lubricating oil additives | Horst Pennewiss, Rainer Benda, Heinz Jost | 1981-09-22 |
| 4282132 | Lubricating oil additives | Rainer Benda, Peter Neudoerfl, Horst Pennewiss | 1981-08-04 |
HK
Helmuth Knoell
Overall (All Time): #2,371,321 of 4,157,543Top 60%
2
Patents All Time