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, 2012
Filed:
Jun. 21, 2011
Christian Bittner, Bensheim, DE;
Oetter Günter, Frankenthal, DE;
Ulrich Steinbrenner, Neustadt, DE;
Marcus Guzmann, Mühlhausen, DE;
Andrea Haunert, Singapore, SG;
Rainer Papp, Speyer, DE;
Jens Rudolph, Worms, DE;
Christian Bittner, Bensheim, DE;
Oetter Günter, Frankenthal, DE;
Ulrich Steinbrenner, Neustadt, DE;
Marcus Guzmann, Mühlhausen, DE;
Andrea Haunert, Singapore, SG;
Rainer Papp, Speyer, DE;
Jens Rudolph, Worms, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Surfactants of the general formula R—X where Ris an aliphatic CH-alkyl radical and X is a hydrophilic group, and the mean degree of branching of the Rradical is from 2.8 to 3.7. Mixtures which comprise such surfactants and the use of such surfactants and of mixtures thereof for tertiary mineral oil extraction.