Inventor

Alain C. Rochat

Inventor

Fribourg, CH

Overview

32→

Patents

1976–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 32 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Dprimary

C07DHeterocyclic compounds26%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments24%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients12%

G03GElectrography8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

C07CAcyclic or carbocyclic compounds5%

G11BInformation storage based on relative movement between record carrier and transducer5%

H10KOrganic electric solid-state devices4%

Y10TTechnical subjects covered by former us classification4%

C09KMaterials for miscellaneous applications, not provided for elsewhere2%

PatentTitleYear

6,576,768'Preparation of alkylthio- and/or arylthio-substituted diketo-diaryl-pyrrolopyrroles'2003 5,973,146'Process for the preparation of aminated diketobis (aryl or heteroaryl)pyrrolopyrroles and the use thereof as photoconductive substances'1999 5,472,815'Process for storing information and a material having information written thereon'1995 5,352,551'Process for storing information with high storage density'1994 5,316,852'Coated material and the use thereof'1994 5,298,063'Novel electrochromic compositions based on diketopyrrolopyrroles'1994 5,169,953'Electrochromic compositions based on diketopyrrolopyrroles'1992 5,144,333'Process for the storage of information in an organic recording layer'1992 5,017,706'Monoketopyrrolopyrroles'1991 4,914,211'Pigment compositions'1990 4,810,802'Process for the preparation of brominated pyrrolo-[3,4-c]-pyrroles and mixtures thereof'1989 4,791,204'1,4-diketopyrrolo[3,4-c]pyrrole pigments'1988 4,782,153'Pyridoquinolone derivatives'1988 4,778,899'Process for the preparation of pyrrolo (3,4-c) pyrroles'1988 4,760,151'Dithioketo pyrrolopyrroles'1988 4,760,004'Thioquinacridones and isothioquinacridones, preparation and use thereof'1988 4,749,795'Phenyl substituted pyrrolinones'1988 4,730,014'Use of pyridoquinolone derivatives as pigments'1988 4,720,305'Mixtures of pigments'1988 4,681,971'Phenyl substituted aminodicarboxylate esters'1987 4,666,455'Compositions pigmented with N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles'1987 4,659,775'Process for the preparation of pyrrolo[3,4-c]pyrroles, and novel pyrrolo[3,4-c]pyrroles'1987 4,632,893'Electrophotographic recording material containing selected dithioke topyrrolopyrroles'1986 4,613,669'Preparation of 1,4-diketopyrrolo-[3,4-c]pyrroles'1986 4,585,878'N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles'1986 4,579,949'Preparation of pyrrolo[3,4-c]pyrroles'1986 4,540,791'Production of .beta.-amino-.alpha.,.beta.-unsaturated carboxylic acid esters'1985 4,500,718'Process for producing bismethine isoindolines'1985 4,426,533'Process for producing bismethine isoindolines'1984 4,138,429'Process for the manufacture of o-phenylenediacetonitrile'1979 4,001,266'Process for the manufacture of 2-(2-hydroxyphenyl)benztriazoles'1977 3,998,804'Process for coupling of water-insoluble 2,4-disubstituted phenols with diazotized o-nitroanilines'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1995Patents assigned to CIBA GEIGY CORP (30)· patent assignee history

1976–1979Based in Birsfelden, CH· patent location history

1984–1986Based in Basel, CH· patent location history

1985–2003Based in Fribourg, CH· patent location history

1999–2003Patents assigned to CIBA SC HOLDING AG (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CIBA GEIGY CORP	30	1976–1995
CIBA SC HOLDING AG	2	1999–2003

Locations

Location	Patents	Span
Fribourg, CH	26	1985–2003
Basel, CH	3	1984–1986
Birsfelden, CH	3	1976–1979