HP

Hanspeter Preiswerk

CI Ciba-Geigy: 1 patents #136 of 476Top 30%
📍 Birsfelden, CH: #2 of 4 inventorsTop 50%
Overall (1997): #144,705 of 185,788Top 80%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5641879 Phthalocyanines substituted by phosphorus-containing groups Heinz Wolleb, Beat Schmidhalter, Heinz Spahni 1997-06-24