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. 13, 2026
Filed:
Sep. 03, 2021
Applicant:
Johnson Matthey Davy Technologies Limited, London, GB;
Inventors:
John Swinney, Stockton-on-Tees, GB;
Paul Gordon, Stockton-on-Tees, GB;
David John Watson, Stockton-on-Tees, GB;
Graham Reed, London, GB;
Assignee:
Johnson Matthey Davy Technologies Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/88 (2006.01); C07C 51/12 (2006.01); C07C 67/08 (2006.01);
U.S. Cl.
CPC ...
C07C 29/88 (2013.01); C07C 51/12 (2013.01); C07C 67/08 (2013.01);
Abstract
A process for refining a crude ethylene glycol stream comprising monoethylene glycol and at least one acid contaminant is disclosed. The process comprises reacting the acid contaminant with the monoethylene glycol in at least one reaction zone to form an ester and removing the ester in a separation step.