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:
Feb. 03, 1976
Filed:
Nov. 05, 1974
Applicant:
Inventors:
J Michael Grasshoff, Hudson, MA (US);
Jerome L Reid, Wayland, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260-8 ; 260 / ; 260 79 ; 2603 / ;
Abstract
Novel polymeric derivatives of tetrazole-5-thiols and their metal and ammonium salts, and the preparation of such compounds which are useful as gelatin thickeners or in their production, are disclosed.