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. 13, 2018
Filed:
Jun. 20, 2012
Applicants:
Oscar Lafuente Cerda, Ebersberg, DE;
Bernd Bruchmann, Freinsheim, DE;
Sophie Maitro-vogel, Mannheim, DE;
Marta Reinoso Garcia, Dossenheim, DE;
Inventors:
Oscar Lafuente Cerda, Ebersberg, DE;
Bernd Bruchmann, Freinsheim, DE;
Sophie Maitro-Vogel, Mannheim, DE;
Marta Reinoso Garcia, Dossenheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/60 (2006.01); C09K 8/08 (2006.01); C09K 8/22 (2006.01);
U.S. Cl.
CPC ...
C09K 8/08 (2013.01); C09K 8/22 (2013.01); C09K 2208/12 (2013.01);
Abstract
What is proposed is the use of hyperbranched polylysine in the development, exploitation and completion of underground mineral oil and natural gas deposits, and in deep wells, especially as a shale inhibitor in water-based drilling muds, completion fluids or stimulation fluids.