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Inventor

Erich Istel

Inventor
Dormagen, DE

Overview

3→
Patents
1982–1991
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.

C08Kprimary
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients40%
C08JWorking-up20%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments20%
D06LDry-cleaning, washing or bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods20%
PatentTitleYear
5,059,643'Stabilized polyamides'19914,837,265'Process for the preparation of stabilized polyamides'19894,340,389'Process for the preparation of water-soluble dyestuffs with a low salt content'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1991Patents assigned to BAYER AG (3)· patent assignee history
1982–1991Based in Dormagen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG31982–1991
Locations
LocationPatentsSpan
Dormagen, DE31982–1991