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:
Jan. 10, 1989
Filed:
Aug. 12, 1986
Applicant:
Inventor:
John A Cleverley, Didcot, GB;
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 427 ; 252 33 ; 252 41 ; 252 482 ;
Abstract
A highly basic lithium sulphonate, having a TBN of at least 250 mgKOH/g is prepared by heating a mixture of lithium hydroxide monohydrate and a solvent to remove water as an azeotrope of water and said solvent prior to formation of the lithium salt of the sulphonic acid and subsequently overbasing with carbon dioxide.
Cleverley, John. (1989). Overbased additives (U.S. Patent No. 4797217). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4797217
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile