HS

Heinrich Spahrkas

BH Bayer Healthcare: 2 patents #3,312 of 8,007Top 45%
📍 Leverkusen, DE: #733 of 1,687 inventorsTop 45%
Overall (All Time): #2,372,103 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4298344 Age resistant chrome tanning agents Herbert Knopf, Wolfhard Luck 1981-11-03
4211529 Chrome-tanning Josef Muller, Ernst Komarek, Wolfhard Luck 1980-07-08