Inventor
Karl-Heinz Reinhardt
Inventor
Monheim, DE
Overview
Patents· 7 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. pigments40%
C07DHeterocyclic compounds13%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients13%
C07CAcyclic or carbocyclic compounds7%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
C09DCoating compositions, e.g. paints, varnishes or lacquers7%
D06PDyeing or printing textiles7%
D21HPulp compositions7%
PatentTitleYear
6,465,659'Process for preparing asymmetrical methine dyes'20026,121,452'Process for the preparation of quinophthalones'20005,955,614'Bridged perinones/quinophthalones'19995,912,386'Bridged anthraquinones'19995,646,257'Azodyestuffs, their preparation and their use'19975,639,896'Process for the preparation of N,N\'-disubstituted 1,4-diaminoanthraquinones'19974,892,950'Process for the preparation of naphthalene-1,8-dicarboximides'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2002Patents assigned to BAYER AG (7)· patent assignee history
1990–1997Based in Leverkusen, DE· patent location history
1999–2002Based in Monheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 7 | 1990–2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Monheim, DE | 4 | 1999–2002 |
| Leverkusen, DE | 3 | 1990–1997 |