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Inventor

Heinrich Leister

Inventor
Leverkusen, DE

Overview

3→
Patents
1976–1981
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds50%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments25%
D06PDyeing or printing textiles25%
PatentTitleYear
4,246,180'Process for separating off 1-amino-4-bromoanthraquinone-2-sulphonic acid'19814,213,910'Process for the preparation of 1-amino-4-bromoanthraquinone-2-sulphonic acid I'19803,979,413'Polycyclic dyestuffs'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1981Patents assigned to BAYER AG (3)· patent assignee history
1976–1981Based in Leverkusen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG31976–1981
Locations
LocationPatentsSpan
Leverkusen, DE31976–1981