IP Library › Granted Patent US 5,229,521
Granted Patent Utility
US 5,229,521 · App. 07/965,560

Process for the preparation of symmetrical 2,2-methylenebisbenzotriazolyl phenols

Inventors: Reto Luisoli, Werner Stegmann
Patented Case View Patent ↗
Granted: Jul 20, 1993 Filed: Oct 23, 1992
Inventors
Reto Luisoli
Werner Stegmann
Assignee (at issue)
Ciba-Geigy

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Quick Facts
Patent No.
US 5,229,521
App. No.
07/965,560
Filed
1992-10-23
Granted
1993-07-20
Kind
A