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Inventor

Manfred Wiesel

Inventor
Leverkusen, DE

Overview

2→
Patents
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.

C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments67%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients33%
PatentTitleYear
4,055,557'Sulfonamidobenzene-azo-aminopyrazole dyestuffs'19774,026,931'Process for dyeing polyurethane plastics'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to BAYER AG (2)· patent assignee history
1977Based in Leverkusen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG21977
Locations
LocationPatentsSpan
Leverkusen, DE21977