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. 30, 2012
Filed:
Dec. 21, 2009
Joseph Zilberman, Haifa, IL;
Dorit Canfi, Zichron Yaacov, IL;
Andrew Gregor, Hopewell Junction, NY (US);
Andrew Piotrowski, Yorktown Heights, NY (US);
Joseph Zilberman, Haifa, IL;
Dorit Canfi, Zichron Yaacov, IL;
Andrew Gregor, Hopewell Junction, NY (US);
Andrew Piotrowski, Yorktown Heights, NY (US);
ICL-IP America Inc., Ardsley, NY (US);
Abstract
There is provided herein a process for purifying bisphosphate comprising solvating a molten bisphosphate in a mixture of water and water miscible solvent; cooling the solution over a period and to a temperature that provides for crystallization of solid product; increasing the pH of the solution prior to, and/or during, and/or after the initiation of crystallization, and/or after crystallization, by the addition of a base; and after crystallization is complete, separating solid product from the solution; washing the separated solid product in the same and/or different mixture of water and water miscible solvent; and, washing the solid product which has been washed in the mixture with water.