Inventor · disambiguated record
Hans-Helmut Frey
Also filed as: FREY HANS · FREY HANS-HELMUT
6 granted patents·82 citations·filing 1975–1980
83Inventor score
Top patents by PatentIndex Score
6 records- 0174US3940456AThermoplastic composition comprising PVC and chlorinated polyethyleneHOECHST AG·Filed 1975·Granted Feb 24, 1976·26 cites·6 claims
- 0271US4113805AThermoplastic compositions comprising PVC and chlorinated polyethyleneHOECHST AG·Filed 1977·Granted Sep 12, 1978·23 cites·5 claims
- 0368US4280940AThermoplastic composition comprising vinyl chloride polymer and two chlorinated polyethylenesHOECHST AG·Filed 1980·Granted Jul 28, 1981·22 cites·6 claims
- 0451US4217304AContinuous reduction processCIBA GEIGY AG·Filed 1978·Granted Aug 12, 1980·4 cites·18 claims
- 0538US3994995AThermoplastic composition comprising pvc and chlorinated polyethyleneHOECHST AG·Filed 1975·Granted Nov 30, 1976·6 cites·6 claims
- 0631US4348334AProcess for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong's acid)CIBA GEIGY AG·Filed 1980·Granted Sep 7, 1982·1 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →