HF

Hans-Rudolf Frei

CI Ciba-Geigy: 1 patents #1,572 of 2,867Top 55%
Overall (All Time): #4,124,997 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4237179 Process for fireproofing cellulose-containing fiber material dyed with copper-complex azo dyes Detlef Mentzel 1980-12-02