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:
Apr. 14, 1981
Filed:
Feb. 05, 1979
Applicant:
Inventor:
Andrea Quaglia, Albisola M., IT;
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430503 ; 430387 ; 430 ; 430558 ;
Abstract
2-equivalent 5-pyrazolone magenta couplers having a 1,2,4-triazole with a halogen in the 3-position and a hydrogen in the 5-position thereof are particularly useful in color photographic emulsions.
Quaglia, Andrea. (1981). Photographic elements containing 5-pyrazolone magenta couplers (U.S. Patent No. 4262087). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4262087
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile