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:
Dec. 13, 1976
Filed:
Aug. 03, 1975
Applicant:
Inventors:
Ivan Joseph Bolton, Bingley, EN;
Alec Victor Mercer, Leeds, EN;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
2603 / ; 260311 ; 427158 ; 8 1 / ;
Abstract
Disclosed are anionic optical brightening agents, such agents being 1,3-diphenyl pyrazolines characterized by having, in the 4- or 5-position of the pyrazoline ring, a sulphoalkyl substituent, their production and use.
Bolton, Ivan. (1976). 1,3-diphenyl pyrazolines (U.S. Patent No. 3997556). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3997556
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile