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. 18, 1977
Filed:
Aug. 18, 1975
Applicant:
Inventors:
James R Bartels-Keith, Lexington, MA (US);
Mary T Burgess, Boston, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ;
Abstract
This invention relates to meso-ionic tetrazole compounds of the formula: ##STR1## wherein X.sup.- is -S.sup.- or -Se.sup.- which are useful as photographic additives and to an intermediate useful in the preparation thereof having the formula: ##STR2##
Bartels-Keith, James. (1977). Meso-ionic se- and s-containing tetrazoles (U.S. Patent No. 4003910). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4003910
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile