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:
Jun. 28, 1994
Filed:
Mar. 25, 1993
Applicant:
Inventors:
Bruno Delfort, Paris, FR;
Maurice Born, Nanterre, FR;
Jacques Lallement, Aubervilliers, FR;
Guy Parc, Rueil Malmaison, FR;
Assignee:
Institut Francais du Petrole, Rueil Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 18 ; 252 25 ; 252 334 ; 252 496 ; 252 332 ;
Abstract
A description is given of colloidal sulphur products, their preparation and their use as additives in lubricating oils. These products result from the reaction on a superbasic detergent additive, optionally modified by reaction with a boron derivative, of a 'small size' sulphur carboxylic acid complying with the general formula