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. 15, 1980
Filed:
Nov. 21, 1977
Applicant:
Inventors:
Karl-Heinz Grodde, Celle, DE;
Alfred Schulz, Hornbostel, DE;
Assignee:
Deutsche Texaco Aktiengesellschaft, Hamburg, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09F / ; C09K / ;
U.S. Cl.
CPC ...
260 976 ; 252 / ; 260 97 ; 260 975 ;
Abstract
This invention relates to an aqueous drilling fluid containing a tall oil fraction as a lubricating additive, a method of drilling with said drilling fluid containing said tall oil lubricating additive and the tall oil lubricating additive per se.
Grodde, Karl-Heinz. (1980). Aqueous drilling fluid (U.S. Patent No. 4212794). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4212794
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile