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Inventor

Rolf Urtel

Inventor
Frankenthal, DE

Overview

2→
Patents
1976–1978
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. pigments50%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
4,116,953'Azo dyes'19783,953,420'Azo pigments derived from 2-hydroxy-3-carboxynaphthalene containing a substituted or unsubstituted phthalimide'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to BASF AG (2)· patent assignee history
1976Based in Ludwigshafen, DE· patent location history
1978Based in Frankenthal, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BASF AG21976–1978
Locations
LocationPatentsSpan
Frankenthal, DE11978
Ludwigshafen, DE11976