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:
Mar. 19, 2013
Filed:
Sep. 23, 2009
Applicants:
Duy T. Nguyen, Houston, TX (US);
G. Richard Meyer, Missouri City, TX (US);
Inventors:
Duy T. Nguyen, Houston, TX (US);
G. Richard Meyer, Missouri City, TX (US);
Assignee:
Nalco Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F 11/14 (2006.01); E21B 43/26 (2006.01); E21B 43/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for introducing a foaming composition including an imidazoline-based compound to a fluid. The foaming composition comprises at least one quaternized compound having an imidazoline moiety. An example of the quaternized compound is a quaternized imidazoline.