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:
Feb. 12, 2013
Filed:
Dec. 21, 2007
Beatriz Penalver Bernabe, Chicago, IL (US);
Thomas Guggenheim, Mt. Vernon, IN (US);
David Bruce Hall, Ballston Lake, NY (US);
Norman Johnson, Mt. Vernon, IN (US);
Juan Justino Rodriguez Ordonez, Madrid, ES;
David Woodruff, Saratoga Springs, NY (US);
Beatriz Penalver Bernabe, Chicago, IL (US);
Thomas Guggenheim, Mt. Vernon, IN (US);
David Bruce Hall, Ballston Lake, NY (US);
Norman Johnson, Mt. Vernon, IN (US);
Juan Justino Rodriguez Ordonez, Madrid, ES;
David Woodruff, Saratoga Springs, NY (US);
Abstract
A method for the purification of aromatic polyether polymers prepared by a halide displacement polymerization process comprises adsorbing the catalyst with an alkali metal halide to form an adsorbent component and then removing the adsorbent component. Mixtures resulting from this method are also discussed.