LexDanaLexDanabeta
Inventor

Gerhard Umsonst

Inventor
Frenkendorf, CH

Overview

2→
Patents
1978–1982
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.

C08Kprimary
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients40%
C08LCompositions of macromolecular compounds20%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments20%
D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons20%
PatentTitleYear
4,344,767'Process for coloring linear polyesters in the melt'19824,093,584'Process for the mass coloration or whitening of linear polyesters'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1982Patents assigned to CIBA GEIGY CORP (2)· patent assignee history
1978–1982Based in Frenkendorf, CH· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CIBA GEIGY CORP21978–1982
Locations
LocationPatentsSpan
Frenkendorf, CH21978–1982