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:
Oct. 22, 2019
Filed:
Mar. 26, 2015
Applicant:
Cabot Corporation, Boston, MA (US);
Inventors:
Eugene N. Step, Newton, MA (US);
Michael J. Natan, Weston, MA (US);
Assignee:
Cabot Corporation, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/36 (2006.01); C09C 3/08 (2006.01); C09C 1/56 (2006.01);
U.S. Cl.
CPC ...
C09K 8/36 (2013.01); C09C 1/56 (2013.01); C09C 3/08 (2013.01); C01P 2006/12 (2013.01); C01P 2006/19 (2013.01); C01P 2006/40 (2013.01);
Abstract
Surface treated modified carbon black particles and oil-based drilling fluids are described. The carbon blacks are incorporated into the oil-based drilling fluids to reduce the electrical resistivity of the oil-based drilling fluids. The surface treated carbon blacks can include a hydrophobic organic group and are readily dispersible in oil-based drilling fluids.