WF

Walter Fischer

CI Ciba-Geigy: 40 patents #36 of 2,867Top 2%
Basf Se: 12 patents #1,345 of 13,826Top 10%
SA Siemens Aktiengesellschaft: 4 patents #3,516 of 22,248Top 20%
CC Ciba Specialty Chemicals: 4 patents #283 of 1,233Top 25%
U.S. Philips: 2 patents #4,133 of 8,851Top 50%
CD Chiron Diagnostics: 2 patents #27 of 121Top 25%
HA Huntsman Advanced Materials Americas: 2 patents #25 of 101Top 25%
VA Vantico: 2 patents #13 of 104Top 15%
Google: 2 patents #10,498 of 22,993Top 50%
RS Rohde & Schwarz: 1 patents #445 of 964Top 50%
CA Ciba-Geigy A.G.: 1 patents #3 of 21Top 15%
CG Continental Automotive Gmbh: 1 patents #979 of 2,324Top 45%
EA Epcos Ag: 1 patents #321 of 606Top 55%
CD Ciba Corning Diagnostics: 1 patents #49 of 119Top 45%
Overall (All Time): #24,514 of 4,157,543Top 1%
77
Patents All Time

Issued Patents All Time

Showing 76–77 of 77 patents

Patent #TitleCo-InventorsDate
4385182 Thioxanthonecarboxylic acids and thioxanthonecarboxylic acid derivatives Vratislav Kvita, Hans Zweifel, Louis Felder 1983-05-24
4363917 3,5-Disubstituted phthalic acid imides, phthalic acids and phthalic acid anhydrides Vratislav Kvita, Hans Zweifel 1982-12-14