Eckhard Hetzel has been granted 5 US patents while listed as an inventor at Basf Se . The first was granted in 1980 and the most recent in January 1989. Eckhard Hetzel ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Eckhard Hetzel in Bischofswerda, DE.
Patents per Year Patents granted per year, 1980 to 1989 Bar chart with a peak of 1 patents in 1980. peak 1 1980: 1 patents 1980 1981: 1 patents 1981 1982: 1 patents 1982 1983: 1 patents 1983 1989: 1 patents 1989
Issued Patents All Time
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Showing 1–5 of 5 patents
Patent # Title Co-Inventors Date
4795571 Purification of frozen crystal layers Bernhard Holzknecht , Hugo Fuchs , Klaus Wintermantel , Peter Thoma 1989-01-03
4378240 Preparation of acicular ferromagnetic metal particles consisting essentially of iron Hansjoerg Siegle , Hans H. Reich , Horst Autzen , Werner Steck , Werner Loeser +1 more 1983-03-29
4328339 Continuous preparation of isatoic anhydride Gerhard Kilpper , Johannes Grimmer , Peter Tonne , Hans Christoph Horn 1982-05-04
4289589 Separating toluene diisocyanate and/or higher boiling solvents from distillation residues of the toluene diisocyanate manufacture using a fluidized bed Waldemar Koehler , Bernd Blumenberg , Ludwig Vogel 1981-09-15
4237318 Manufacture of aqueous methanolic solution of sodium formate Werner Ostertag , Gerd Wunsch , Volker Kiener , Siegfried Schreiner , Bernd Leutner +2 more 1980-12-02
