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. 01, 2014
Filed:
May. 12, 2009
Hua Yu, Scarsdale, NY (US);
Dale Stanley Steichen, Danbury, CT (US);
Alan Duncan James, Hopewell Junction, NY (US);
Jon B. Staley, Rolling Meadows, IL (US);
Thomas William Himmel, Naperville, IL (US);
Hua Yu, Scarsdale, NY (US);
Dale Stanley Steichen, Danbury, CT (US);
Alan Duncan James, Hopewell Junction, NY (US);
Jon B. Staley, Rolling Meadows, IL (US);
Thomas William Himmel, Naperville, IL (US);
Akzo Nobel N.V., Arnhem, NL;
Abstract
The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same.