LexDanaLexDanabeta
Inventor

Bernd Dewald

Inventor
Idstein, DE

Overview

4→
Patents
1980–2000
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 as inventor

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

C08Jprimary
C08JWorking-up18%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments18%
C09DCoating compositions, e.g. paints, varnishes or lacquers18%
C09KMaterials for miscellaneous applications, not provided for elsewhere18%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form9%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%
C08LCompositions of macromolecular compounds9%
PatentTitleYear
6,143,379'Polymer laminates having increased hiding power'20006,017,984'Colored cholesteric liquid-crystal polymers having optically variable properties'20004,782,111'Colorant formulation'19884,235,641'Dyeing agent compositions based on polypropylene wax'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1988Patents assigned to HOECHST AG (2)· patent assignee history
1980–2000Based in Idstein, DE· patent location history
2000Patents assigned to CLARIANT GMBH (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CLARIANT GMBH22000
HOECHST AG21980–1988
Locations
LocationPatentsSpan
Idstein, DE41980–2000