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:
Jan. 10, 1978
Filed:
Sep. 09, 1976
Applicant:
Inventors:
James R Bartles-Keith, Lexington, MA (US);
Mary T Burgess, Boston, MA (US);
Jean B Rogers, Carlisle, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2603 / ; 548359 ; 96 6 / ;
Abstract
This invention relates to N-nitroso compounds having the formula ##STR1## wherein R and R' each are selected from hydrogen and alkyl, Z is --CN or --COOR' wherein R' is alkyl and n is a positive integer from 1 to 7. These compounds are useful as intermediates in the preparation of photographic silver halide developing agents.