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:
Oct. 07, 2003
Filed:
Mar. 23, 2001
Applicant:
Inventors:
Norman Enoch Johnson, Mt. Vernon, IN (US);
Raul Eduardo Ayala, Clifton Park, NY (US);
Thomas Joseph Fyve, Schenectady, NY (US);
Amy Rene Freshour, Putte, NL;
David Winfield Woodruff, Clifton Park, NY (US);
Peter David Phelps, Schenectady, NY (US);
Ganesh Kailasam, Murcia, ES;
Assignee:
General Electric Company, Niskayuna, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08F 6/16 ;
U.S. Cl.
CPC ...
G08F 6/16 ;
Abstract
Aromatic polyethers are prepared by displacement polymerization reaction in the presence of a water-immiscible solvent with density ratio to water in a range of between about 0.9:1 and about 1.1:1 measured at a temperature in a range of between about 20° C. and about 25° C. The polyethers are purified by processes comprising aqueous extraction, or filtration, or a combination thereof.