Inventor · disambiguated record
Helmut Alfs
Also filed as: ALFS HELMUT · LIST FERDINAND
6 granted patents·63 citations·filing 1976–1982
83Inventor score
Files withHUELS CHEMISCHE WERKE AG6
Top patents by PatentIndex Score
6 records- 0174US4461916AProcess for the production of p-tert-octyl phenol by catalytic alkylation of phenolHUELS CHEMISCHE WERKE AG·Filed 1982·Granted Jul 24, 1984·15 cites·10 claims
- 0272US4168390AProcess for continuous alkylation of phenol using ion exchange resinsHUELS CHEMISCHE WERKE AG·Filed 1976·Granted Sep 18, 1979·10 cites·5 claims
- 0360US4414125AAlkali metal or amine salts of a mixture of 2- and 3-alkyladipic acids as corrosion inhibitorsHUELS CHEMISCHE WERKE AG·Filed 1980·Granted Nov 8, 1983·11 cites·11 claims
- 0458US4162365ALiquid phase air oxidation process for making phthalic acidsHUELS CHEMISCHE WERKE AG·Filed 1976·Granted Jul 24, 1979·5 cites·18 claims
- 0556US4211506AMethod and apparatus for the metered conveying of pulverulent solidsHUELS CHEMISCHE WERKE AG·Filed 1978·Granted Jul 8, 1980·14 cites·1 claims
- 0652US4236033AProcess for the manufacture of p-alkylphenolsHUELS CHEMISCHE WERKE AG·Filed 1978·Granted Nov 25, 1980·8 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →