Inventor · disambiguated record
Meinhard Rolf
Also filed as: ROLF MEINHARD
22 granted patents·1 pending application·169 citations·filing 1977–2009
95Inventor score
Top patents by PatentIndex Score
23 records- 0198US4225489AHeterocyclic azo dyes and pigments containing 4-quinazolinone moietiesBAYER AG·Filed 1977·Granted Sep 30, 1980·53 cites·4 claims
- 0282US4284411AAnthraquinone derivatives for pigmenting organic macromolecular substancesBAYER AG·Filed 1979·Granted Aug 18, 1981·11 cites·11 claims
- 0379US4260540AAzo dye pigments containing 4-quinazolinone moietiesBAYER AG·Filed 1979·Granted Apr 7, 1981·10 cites·6 claims
- 0476US4709019AAnthraquinone-azo pyridone-containing compoundsBAYER AG·Filed 1983·Granted Nov 24, 1987·10 cites·4 claims
- 0572US5284511AConditioning process for phthalocyanine pigmentsMILES INC·Filed 1993·Granted Feb 8, 1994·13 cites·16 claims
- 0672US5091532AProcess for the preparation of pigments based on isoindoleBAYER AG·Filed 1990·Granted Feb 25, 1992·12 cites·8 claims
- 0766US4666526AAzine pigments, processes for their preparation, and their useBAYER AG·Filed 1985·Granted May 19, 1987·8 cites·14 claims
- 0866US4246401AAxomethine pigmentsBAYER AG·Filed 1979·Granted Jan 20, 1981·6 cites·7 claims
- 0965US4435589AProcess for the preparation of dimethyl succinylosuccinate, the disodium salt thereof, dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and dianilinoterephthalic acids, and the dimethyl esters and salts thereofBAYER AG·Filed 1982·Granted Mar 6, 1984·7 cites·14 claims
- 1063US5128267ANaphthotriazolium saltsMILES INC·Filed 1991·Granted Jul 7, 1992·8 cites·7 claims
- 1161US4721745APigments based on metal complexesBAYER AG·Filed 1986·Granted Jan 26, 1988·6 cites·10 claims
- 1261US4564680AIsoindolazinesBAYER AG·Filed 1983·Granted Jan 14, 1986·6 cites·5 claims
- 1361US4288362AMonoazo pigments containing a quinazo linonylacetoacetanilide coupling componentBAYER AG·Filed 1979·Granted Sep 8, 1981·5 cites·4 claims
- 1456US4628093ARed nickel azine pigmentBAYER AG·Filed 1984·Granted Dec 9, 1986·4 cites·3 claims
- 1550US2010092887A1FLUORINE-CONTAINING QUINACRIDONES IN COLOUR FILTERS FOR LCDsLANXESS DEUTSCHLAND GMBH·Filed 2009·Application pending·0 cites
- 1647US4614547AAzine pigmentsBAYER AG·Filed 1985·Granted Sep 30, 1986·3 cites·9 claims
- 1746US5194626AMetal complex pigments of azinesBAYER AG·Filed 1992·Granted Mar 16, 1993·3 cites·6 claims
- 1843US4309221AAnthraquinone derivativesBAYER AG·Filed 1979·Granted Jan 5, 1982·2 cites·10 claims
- 1934US4323671AAnthraquinone derivatives, processes for their preparation, processes for pigmenting organic macromolecular substances, and pigmented organic macromolecular materialBAYER AG·Filed 1980·Granted Apr 6, 1982·1 cites·2 claims
- 2030US4389215AAnthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substancesBAYER AG·Filed 1981·Granted Jun 21, 1983·0 cites·6 claims
- 2130US4323670AAnthraquinone-azomethine compounds, processes for their preparation and processes for pigmenting organic macromolecular substancesBAYER AG·Filed 1980·Granted Apr 6, 1982·0 cites·3 claims
- 2230US4319025AAnthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substancesBAYER AG·Filed 1980·Granted Mar 9, 1982·1 cites·3 claims
- 2327US5162518AHeterocyclic compounds and porphyrin compounds obtainable therefromBAYER AG·Filed 1992·Granted Nov 10, 1992·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →