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:
Mar. 05, 1991
Filed:
Mar. 05, 1990
Applicant:
Inventors:
Tze C Jao, Fishkill, NY (US);
Jayne M Vaccaro, Fishkill, NY (US);
Leonard A Matthews, Port Arthur, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 33 ; 252 18 ; 252 25 ; 252 332 ; 252 334 ;
Abstract
A method of preparing a calcium sulfonate having a TBN of 500 where the method comprises reacting CaO, Ca(OH).sub.2 and H.sub.2 O, and synthetic and natural sulfonates in certain molar ratios, respectively, for a sufficient length of time to produce the overbased calcium sulfonate.