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Inventor

Volker Ehrig

Inventor
Bergisch Gladbach, DE

Overview

2→
Patents
1980–1981
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

C07Dprimary
C07DHeterocyclic compounds50%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments50%
PatentTitleYear
4,286,962'Phthalocyanine reactive dyestuffs, their preparation and their use for dyeing materials containing hydroxyl groups or amide groups'19814,220,779'Process for the preparation of quinoline derivatives'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1981Patents assigned to BAYER AG (2)· patent assignee history
1980–1981Based in Bergisch Gladbach, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG21980–1981
Locations
LocationPatentsSpan
Bergisch Gladbach, DE21980–1981