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:
Jul. 11, 1978
Filed:
Feb. 25, 1977
Applicant:
Inventors:
Gloria DiMarco Sinkovitz, Bridgeville, PA (US);
Andrew Jackson Sharpe, Jr, Cheshire, CT (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
252 / ; 166282 ; 166283 ; 252 / ; 526295 ;
Abstract
Acids, particularly dilute acid solutions thickened with copolymers of dimethyl diallyl ammonium chloride and a monomer capable of postreaction after polymerization to provide branching or partial crosslinking, are useful as oil well drilling and fracturing fluids for stimulating well production.
Sinkovitz, Gloria. (1978). Polymers for acid thickening (U.S. Patent No. 4100079). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4100079
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile