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. 28, 1989
Filed:
Nov. 20, 1984
Applicant:
Inventor:
Wen-Ching Hsieh, Chino Hills, CA (US);
Assignee:
Union Oil Company of California, Los Angeles, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524156 ; 524747 ; 526209 ;
Abstract
A stable latex composition possessing a viscosity of less than about 50 cp. comprised of an ethylacrylane/methylacrylic acid/acrylic acid polymer and a nonylphenol polyethylene oxide ether sulfate useful for increasing the viscosity of water that is injected into subterranean petroleum bearing formations for the enhanced recovery of the petroleum.