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:
Apr. 16, 2024
Filed:
Mar. 31, 2023
Applicant:
Afton Chemical Corporation, Richmond, VA (US);
Inventors:
Brandon Knouse, Moseley, VA (US);
David Edwards, Richmond, VA (US);
Magdalena Makowska, Mechanicsville, VA (US);
Gregory James, Glen Allen, VA (US);
Assignee:
Afton Chemical Corporation, Richmond, VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/165 (2006.01); C10M 137/10 (2006.01);
U.S. Cl.
CPC ...
C07F 9/165 (2013.01); C10M 137/105 (2013.01);
Abstract
A mixture including a thiophosphoric acid product suitable for preparing organometallic and/or ashless antiwear additives having improved copper corrosion performance. The thiophosphoric acid product is distilled and recovered as a condensate of the distillation and having a low level of active sulfur.