Inventor · disambiguated record
Hans W. Frass
Also filed as: FRASS HANS W · FRASS HANS WERNER
8 granted patents·178 citations·filing 1976–1993
88Inventor score
Technology areasG03F
Files withHOECHST AG8
Top patents by PatentIndex Score
8 records- 0197US4101323ARadiation-sensitive copying compositionHOECHST AG·Filed 1976·Granted Jul 18, 1978·87 cites·16 claims
- 0275US5227281AProcess for producing negative copiesHOECHST AG·Filed 1990·Granted Jul 13, 1993·30 cites·12 claims
- 0364US4889788APhotosensitive composition, photosensitive copying material prepared from this composition with thermal hardening symmetric triazine alkyl(aryl)-etherHOECHST AG·Filed 1988·Granted Dec 26, 1989·14 cites·5 claims
- 0459US5376496ARadiation-sensitive mixture, radiation-sensitive recording material produced therewith containing halogenated methyl groups in the polymeric binderHOECHST AG·Filed 1991·Granted Dec 27, 1994·16 cites·21 claims
- 0556US5292626ADeveloper composition for irradiated, radiation-sensitive positive-working, negative-working and reversible reprographic layersHOECHST AG·Filed 1991·Granted Mar 8, 1994·13 cites·20 claims
- 0645US5378584ARadiation-sensitive recording material with a positive-working, radiation-sensitive layer having a rough surface containing a surfactant having polysiloxane unitsHOECHST AG·Filed 1992·Granted Jan 3, 1995·10 cites·20 claims
- 0736US5368975APositive-working 1,2-quinone diazide radiation-sensitive mixture and recording material containing urethane compound to diminish developer solubilityHOECHST AG·Filed 1993·Granted Nov 29, 1994·5 cites·15 claims
- 0836US4990429AProcess for the production of negative relief copies utilizing reversal processingHOECHST AG·Filed 1989·Granted Feb 5, 1991·3 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →