Inventor
ROCHAT ALAIN C
CH28 patents
Patents
28 patentsUS4579949AApr 1, 1986
Preparation of pyrrolo[3,4-c]pyrroles
CIBA GEIGY CORP166 citations99
US4791204ADec 13, 1988
1,4-diketopyrrolo[3,4-c]pyrrole pigments
CIBA GEIGY CORP82 citations96
US4585878AApr 29, 1986
N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles
CIBA GEIGY CORP107 citations96
US5298063AMar 29, 1994
Novel electrochromic compositions based on diketopyrrolopyrroles
CIBA GEIGY CORP23 citations92
US4914211AApr 3, 1990
Pigment compositions
CIBA GEIGY CORP32 citations92
US4778899AOct 18, 1988
Process for the preparation of pyrrolo (3,4-c) pyrroles
CIBA GEIGY CORP28 citations92
US4760004AJul 26, 1988
Thioquinacridones and isothioquinacridones, preparation and use thereof
CIBA GEIGY CORP31 citations92
US4760151AJul 26, 1988
Dithioketo pyrrolopyrroles
CIBA GEIGY CORP26 citations92
US4720305AJan 19, 1988
Mixtures of pigments
CIBA GEIGY CORP45 citations92
US4666455AMay 19, 1987
Compositions pigmented with N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles
CIBA GEIGY CORP27 citations92
US4659775AApr 21, 1987
Process for the preparation of pyrrolo[3,4-c]pyrroles, and novel pyrrolo[3,4-c]pyrroles
CIBA GEIGY CORP24 citations82
US4632893ADec 30, 1986
Electrophotographic recording material containing selected dithioke topyrrolopyrroles
CIBA GEIGY CORP21 citations81
US5169953ADec 8, 1992
Electrochromic compositions based on diketopyrrolopyrroles
CIBA GEIGY CORP13 citations74
US5144333ASep 1, 1992
Process for the storage of information in an organic recording layer
CIBA GEIGY CORP14 citations74
US5017706AMay 21, 1991
Monoketopyrrolopyrroles
CIBA GEIGY CORP9 citations74
US4810802AMar 7, 1989
Process for the preparation of brominated pyrrolo-[3,4-c]-pyrroles and mixtures thereof
CIBA GEIGY CORP11 citations74
US4613669ASep 23, 1986
Preparation of 1,4-diketopyrrolo-[3,4-c]pyrroles
CIBA GEIGY CORP14 citations74
US4500718AFeb 19, 1985
Process for producing bismethine isoindolines
CIBA GEIGY CORP6 citations74
US4426533AJan 17, 1984
Process for producing bismethine isoindolines
CIBA GEIGY CORP10 citations74
US4782153ANov 1, 1988
Pyridoquinolone derivatives
CIBA GEIGY CORP3 citations63
US4730014AMar 8, 1988
Use of pyridoquinolone derivatives as pigments
CIBA GEIGY CORP2 citations63
US4540791ASep 10, 1985
Production of β-amino-α,β-unsaturated carboxylic acid esters
CIBA GEIGY CORP5 citations63
US4681971AJul 21, 1987
Phenyl substituted aminodicarboxylate esters
CIBA GEIGY CORP2 citations62
US5472815ADec 5, 1995
Process for storing information and a material having information written thereon
CIBA GEIGY CORP4 citations61
US5352551AOct 4, 1994
Process for storing information with high storage density
CIBA GEIGY CORP6 citations61
US5316852AMay 31, 1994
Coated material and the use thereof
CIBA GEIGY CORP4 citations61
US4749795AJun 7, 1988
Phenyl substituted pyrrolinones
CIBA GEIGY CORP3 citations59
US4138429AFeb 6, 1979
Process for the manufacture of o-phenylenediacetonitrile
CIBA GEIGY CORP0 citations52