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:
May. 22, 2012
Filed:
Sep. 13, 2010
Applicants:
Andrew M. Lemonds, Schwenksville, PA (US);
Jinsuo Xu, Fort Washington, PA (US);
Inventors:
Andrew M. Lemonds, Schwenksville, PA (US);
Jinsuo Xu, Fort Washington, PA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/48 (2006.01); C07C 51/00 (2006.01); C07C 51/42 (2006.01); C07C 209/00 (2006.01); C07C 211/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method for extractive recovery and conversion of selected compounds, such as methacrylic acid (MAA) and 2-methacrylamide (MAM), from a stream derived from purification of methyl methacrylate (MMA) or methacrylic acid (MAA) produced via a conventional ACH route process.