Inventor
Bernd Berger-Lohr
Inventor
Leverkusen, DE
Overview
Patents· 3 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. pigments50%
C07DHeterocyclic compounds25%
D06PDyeing or printing textiles25%
PatentTitleYear
4,343,936'Process for the preparation of cationic dyestuffs'19824,342,867'Process for the preparation of cationic dyestuffs'19824,281,124'Reactive quaternary compounds, their preparation and their use for increasing the affinity of anionic dyestuffs for fibres which contain nitrogen or hydroxyl groups'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1982Patents assigned to BAYER AG (3)· patent assignee history
1981–1982Based in Leverkusen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 3 | 1981–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Leverkusen, DE | 3 | 1981–1982 |