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:
Dec. 14, 2010
Filed:
May. 18, 2007
Applicants:
Mohand Melbouci, Wilmington, DE (US);
Tuyen T. Nguyen, Newark, DE (US);
Teng-shau Young, Wilmington, DE (US);
Inventors:
Mohand Melbouci, Wilmington, DE (US);
Tuyen T. Nguyen, Newark, DE (US);
Teng-Shau Young, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
An oilfield servicing fluid composition containing an aldehyde guar produced by enzymatic oxidation of a non-derivatized, straight guar or of a guar derivative. The enzyme used to oxidize the guar to the aldehyde guar is galactose oxidase, which may be combined with catalase or catalase and peroxidase. The aldehyde guar is useful as an effective gelling agent for oilfield servicing fluids such as hydraulic fracturing fluids and stimulation fluids.