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:
Jul. 20, 2010
Filed:
Feb. 08, 2002
Danielle A. Bright, New City, NY (US);
Eric W. Burkhardt, Brewster, NY (US);
Antoon Ten Kate, Arnhem, NL;
Sophia Dashevsky, Monroe Township, NJ (US);
John Tomko, Dobbs Ferry, NY (US);
Danielle A. Bright, New City, NY (US);
Eric W. Burkhardt, Brewster, NY (US);
Antoon ten Kate, Arnhem, NL;
Sophia Dashevsky, Monroe Township, NJ (US);
John Tomko, Dobbs Ferry, NY (US);
Supresta LLC, Ardsley, NY (US);
Abstract
A crude phosphate ester product can be purified by first washing it with chelating agent composition (such as a dilute acidic solution) and then, preferably, water, drying the resulting product, and then treating the resulting product with an acid scavenger, as exemplified by an epoxy-containing compound, such as 3,4-epoxy cyclohexyl methyl-3,4-epoxy cyclohexyl carboxylate.