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:
Apr. 16, 2013
Filed:
Aug. 21, 2008
Allan R. Bailey, Ballwin, MO (US);
David H. White, Ballwin, MO (US);
Derick L. Kaspar, Webster Groves, MO (US);
Robert E. Vandas, Florissant, MO (US);
Michael J. Gentilcore, Maryland Heights, MO (US);
Hung V. Nguyen, Florissant, MO (US);
Anna K. Fukunaga, Florissant, MO (US);
Allan R. Bailey, Ballwin, MO (US);
David H. White, Ballwin, MO (US);
Derick L. Kaspar, Webster Groves, MO (US);
Robert E. Vandas, Florissant, MO (US);
Michael J. Gentilcore, Maryland Heights, MO (US);
Hung V. Nguyen, Florissant, MO (US);
Anna K. Fukunaga, Florissant, MO (US);
Mallinckrodt LLC, Hazelwood, MO (US);
Abstract
A process for separating soluble silica species such as monomeric silicic acid (or monosilicic acid) and low molecular weight soluble polymeric silica from impure water soluble compounds by membrane nanofiltration is provided. A process for separating soluble silica species and colloidal silica from impure water soluble compounds by reverse phase liquid chromatography is also provided.