Inventor · disambiguated record
Helmut Troster
Also filed as: TROESTER HELMUT · TROSTER HELMUT
22 granted patents·224 citations·filing 1974–1999
95Inventor score
Top patents by PatentIndex Score
22 records- 0194US4599408APerylene-3,4,9,10-tetracarboxylic acid monoanhydride monoimidesHOECHST AG·Filed 1984·Granted Jul 8, 1986·27 cites·4 claims
- 0291US4709029AProcess for the preparation of perylene-3,4,9,10-tetracarboxylic acid monoanhydride monoimidesHOECHST AG·Filed 1986·Granted Nov 24, 1987·32 cites·6 claims
- 0388US4501906AMonoalkali metal salts of perylene-3,4,9,10-tetracarboxylic acid monoanhydride and process for their manufacturingHOECHST AG·Filed 1983·Granted Feb 26, 1985·24 cites·8 claims
- 0481US4594420APerylene-3,4,9,10-tetracarboxylic acid monoanhydride monoimide and monoimidazolide compounds, processes for their preparation and their useHOECHST AG·Filed 1984·Granted Jun 10, 1986·13 cites·7 claims
- 0580US4831140AProcess for the preparation of arylimides of perylene-3,4,9,10-tetracarboxylic acidHOECHST AG·Filed 1986·Granted May 16, 1989·16 cites·7 claims
- 0679US4116923ADyed polyesters, process for their preparation and their use for the dyeing of plasticsHOECHST AG·Filed 1977·Granted Sep 26, 1978·24 cites·15 claims
- 0778US3939093ADaylight fluorescent pigmentsHOECHST AG·Filed 1974·Granted Feb 17, 1976·9 cites·12 claims
- 0875US5154770AMix-crystal pigments based on perylenetetracarbimides, process for their preparation and their useHOECHST AG·Filed 1990·Granted Oct 13, 1992·13 cites·2 claims
- 0972US4742170AMix-crystal pigments based on perylenetetracarbimides, process for their preparation, and their useHOECHST AG·Filed 1985·Granted May 3, 1988·10 cites·4 claims
- 1069US4769460AMix-crystal pigments based on perylenetetracarbimides, process for preparing and their useHOECHST AG·Filed 1988·Granted Sep 6, 1988·9 cites·1 claims
- 1169US4002630ANovel aromatic o-hydroxyaldehydes, a process for their preparation and their utilizationHOECHST AG·Filed 1975·Granted Jan 11, 1977·5 cites·5 claims
- 1265US4097450APerinone compounds as colorants for polyolefinsHOECHST AG·Filed 1977·Granted Jun 27, 1978·11 cites·2 claims
- 1360US5319083ABlack peryene-3,4,9,10-tetracarboxylic diimides, their preparation and useHOECHST AG·Filed 1992·Granted Jun 7, 1994·11 cites·4 claims
- 1456US4242139AWater soluble benzoxanthene dyestuffs for fluorescent inksHOECHST AG·Filed 1979·Granted Dec 30, 1980·11 cites·30 claims
- 1548US3954810AProcess for the preparation of 4-bromonaphthalic acid anhydrideHOECHST AG·Filed 1974·Granted May 4, 1976·3 cites·6 claims
- 1636US3947450ABenzoxanthene and benzothioxanthene dicarboxylic acid imide dyestuffs and process for their manufactureHOECHST AG·Filed 1974·Granted Mar 30, 1976·1 cites·7 claims
- 1731US4786575APigment for electrophotographic recording processesHOECHST AG·Filed 1987·Granted Nov 22, 1988·1 cites·2 claims
- 1831US4046501AProcess for the dyeing and printing of synthetic polyamidesHOECHST AG·Filed 1975·Granted Sep 6, 1977·2 cites·4 claims
- 1930US4082769ABenzothioxanthenesHOECHST AG·Filed 1977·Granted Apr 4, 1978·0 cites·13 claims
- 2030US4007180APerinone dyestuffsHOECHST AG·Filed 1975·Granted Feb 8, 1977·0 cites·4 claims
- 2127US6563112B1Method for enhancing the contrast for a transmission electron microscopeDEUTSCHES KREBSFORSCH·Filed 1999·Granted May 13, 2003·2 cites·23 claims
- 2227US6521604B1Compounds containing boron for energy-filtering transmission electron microscopy and for boron neutron-capture therapyDEUTSCHES KREBSFORSCH·Filed 1999·Granted Feb 18, 2003·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →