Inventor · disambiguated record
Hans Frischkorn
Also filed as: FRISCHKORN HANS
8 granted patents·52 citations·filing 1975–1987
85Inventor score
Files withHOECHST AG8
Top patents by PatentIndex Score
8 records- 0172US4271036AColorless formulations of optical brighteners from the series of bis-triazinylamino-stilbene-disulfonic acid compoundsHOECHST AG·Filed 1980·Granted Jun 2, 1981·8 cites·5 claims
- 0271US4110246AMixture of benzoxazole derivativesHOECHST AG·Filed 1977·Granted Aug 29, 1978·13 cites·6 claims
- 0367US4791205ABisbenzoxazolylnaphthalenes containing sulfonate or sulfonamide groups, a process for their preparation and their useHOECHST AG·Filed 1987·Granted Dec 13, 1988·7 cites·3 claims
- 0467US4447350AMixtures of optical brighteners and their useHOECHST AG·Filed 1983·Granted May 8, 1984·12 cites·6 claims
- 0566US3996213A1,2,4-Triazolyl-(1) derivatives, a process for their preparation and their use as optical brightenersHOECHST AG·Filed 1975·Granted Dec 7, 1976·5 cites·6 claims
- 0648US4416795AMixtures of optical brightenersHOECHST AG·Filed 1982·Granted Nov 22, 1983·6 cites·5 claims
- 0739US4376214AProcess for the preparation of naphthalene-1,4-dicarboxylic acidHOECHST AG·Filed 1981·Granted Mar 8, 1983·1 cites·3 claims
- 0832US4375556AProcess for the preparation of naphthalene-1,4-dicarboxylic acidHOECHST AG·Filed 1981·Granted Mar 1, 1983·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →