Inventor
Colin D. Campbell
Inventor
Claymont, DE, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments28%
C09DCoating compositions, e.g. paints, varnishes or lacquers14%
C07DHeterocyclic compounds10%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients10%
C07CAcyclic or carbocyclic compounds7%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium7%
A01NPreservation of bodies of humans or animals or plants or parts thereof3%
A61KPreparations for medical, dental or toiletry purposes3%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations3%
B41MPrinting, duplicating, marking, or copying processes3%
PatentTitleYear
7,544,448'Tetrabenzodiazadiketoperylene pigments for laser marking'20097,419,542'2,9-dichloro-quinacridone as α-quinacridone crystal phase inhibitor'20087,122,081'Process for aqueous milling of quinacridone pigments'20067,101,428'2,9-Dichloro-quinacridone as alpha-quinacridone crystal phase inhibitor'20065,783,723'Process for the preparation of dialkyl succinylsuccinates'19985,334,727'Pyrazole-containing pigment derivatives'19944,981,888'Resin compositions'19914,920,217'Production of dimethylaminomethyl copper phthalocyanine'19904,892,968'3,3\'-Dichloro-4,4-diaminodiphenyl sulfonic acids'19904,205,977'Agent and method for influencing plant growth'19804,153,601'4-Hydroxyquinolone-(2)-azomethine copper complex pigments'19794,147,780'.alpha.-Amino-phosphonous acids for inhibiting bacteria and yeast'19794,102,701'Plaster compositions containing oxo-polycarboxylic acids as a set retarder'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1994Patents assigned to CIBA GEIGY CORP (8)· patent assignee history
1978Based in Cheadle, GB· patent location history
1979–1990Based in Beith, GB· patent location history
1991–1994Based in Wilmington, DE, US· patent location history
1998–2009Patents assigned to CIBA SC HOLDING AG (5)· patent assignee history
1998–2009Based in Claymont, DE, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CIBA GEIGY CORP | 8 | 1978–1994 |
| CIBA SC HOLDING AG | 5 | 1998–2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Claymont, Delaware, US | 5 | 1998–2009 |
| Beith, GB | 5 | 1979–1990 |
| Wilmington, Delaware, US | 2 | 1991–1994 |
| Cheadle, GB | 1 | 1978 |