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Inventor

Volker Hemmerling

Inventor
Schwalbach am Taunus, DE

Overview

2→
Patents
1976–1977
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.

C08Jprimary
C08JWorking-up33%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments33%
C09DCoating compositions, e.g. paints, varnishes or lacquers33%
PatentTitleYear
4,009,142'Sulfonsuccinic acid semi-esters, process for their preparation and their use in pigment preparations for aqueous flexo printing pastes'19773,960,591'Process for the preparation of pigment compositions for the dope dyeing of polyacrylonitrile'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1977Patents assigned to HOECHST AG (2)· patent assignee history
1976Based in Kelkheim, DE· patent location history
1977Based in Schwalbach am Taunus, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HOECHST AG21976–1977
Locations
LocationPatentsSpan
Schwalbach am Taunus, DE11977
Kelkheim, DE11976