Gerhard Neumann

DG Delbag-Luftfilter Gmbh: 6 patents #1 of 3Top 35%

OG Otto Dunkel Gmbh Fabrik Fur Elektrotechnische Gerate: 5 patents #2 of 9Top 25%

Robert Bosch Gmbh: 5 patents #3,563 of 19,740Top 20%

UN Unknown: 3 patents #7,366 of 83,584Top 9%

SÖ Siemens Ag Österreich: 2 patents #24 of 149Top 20%

OG Otto Dunkel Gmbh: 1 patents #6 of 9Top 70%

DG Dornier System Gmbh: 1 patents #27 of 82Top 35%

Hoechst Gmbh: 1 patents #2,248 of 4,020Top 60%

📍 Karlsruhe, DE: #16 of 1,998 inventorsTop 1%

Overall (All Time): #142,815 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #	Title	Co-Inventors	Date
4197098	Filter bypass measurement section	Hans-Henrich Stiehl	1980-04-08
4193844	Method of mounting filter elements and mounting therefor	Jochen Karelin	1980-03-18