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:
Jun. 28, 1988
Filed:
Feb. 26, 1986
Applicant:
Inventors:
David L Connell, Leeds, GB;
John M Farrar, Bradford, GB;
Jurg Heller, Oberwil, CH;
Hans-Rudolf Schmid, Riehen, CH;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
544113 ; 544 83 ; 544197 ; 544198 ; 544208 ; 544209 ; 544211 ; 544212 ;
Abstract
Compounds of formula I ##STR1## can be used as optical brighteners.