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:
Jan. 15, 2008
Filed:
May. 10, 2005
Applicant:
Wangqi Hou, Chesterfield, VA (US);
Inventor:
Wangqi Hou, Chesterfield, VA (US);
Assignee:
Akzo Nobel N.V., Arnhem, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention generally relates to a spacer system for cleaning a section of a subterranean well borehole and casing prior to cementing. The spacer system of the invention comprises a at least one alkyl ether citrate and, optionally, at least one alcohol ethoxylate.
Hou, Wangqi. (2008). Method and composition for cleaning a well bore prior to cementing (U.S. Patent No. 7318477). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7318477
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile