The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1993
Filed:
Jul. 20, 1992
Applicant:
Inventors:
Paul Dubs, Marly, CH;
Werner Stegmann, Liestal, CH;
Reto Luisoli, Holstein, CH;
Roger Martin, Marly, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
558194 ;
Abstract
Compounds of formula Ia ##STR1## in which R.sub.1 is hydrogen, R.sub.2 is methyl, tert-butyl or cyclohexyl, and R.sub.7 and R.sub.8 independently of one another are C.sub.1 -C.sub.18 alkyl, phenyl or C.sub.7 -C.sub.18 alkylphenyl are novel compounds having utility as stabilizers.