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:
Sep. 08, 2009
Filed:
Jul. 29, 2005
Peter Kleijwegt, Heinenoord, NL;
Peter Kleijwegt, Heinenoord, NL;
Chevron Oronite Technology B.V., Rotterdam, NL;
Abstract
The present invention is directed to a low sulfur, low sulfated ash and low phosphorus lubricating oil composition for low emission heavy duty diesel engines comprising (a) a major amount of an oil of lubricating viscosity and (b) a detergent composition comprising a (i) a mixture of a metal salt of an alkyl hydroxyaromatic carboxylic acid and a metal salt of an alkyl phenol, and (ii) a metal salt of a Mannich condensation product of an alkyl phenol. The present invention is also directed to a low sulfur, low sulfated ash and low phosphorus lubricating oil concentrate comprising (a) an oil of lubricating viscosity and (b) a detergent composition comprising a (i) a mixture of a metal salt of an alkyl hydroxyaromatic carboxylic acid and a metal salt of an alkyl phenol, and (ii) a metal salt of a Mannich condensation product of an alkyl phenol.