HB

Hanspeter Birri

CI Ciba-Geigy: 1 patents #137 of 464Top 30%
📍 Pratteln, CH: #1 of 4 inventorsTop 25%
Overall (1994): #129,540 of 165,921Top 80%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5284939 Process for the preparation of highly concentrated solutions of cationic azo dyes Alex Nicopoulos, Gerhard Hanika 1994-02-08