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:
Jun. 29, 2010
Filed:
Oct. 11, 2007
Roger A. Rajewski, Lawrence, KS (US);
Bala Subramaniam, Lawrence, KS (US);
Fenghui Niu, Lawrence, KS (US);
Roger A. Rajewski, Lawrence, KS (US);
Bala Subramaniam, Lawrence, KS (US);
Fenghui Niu, Lawrence, KS (US);
Crititech, Inc., Lawrence, KS (US);
Abstract
Commercially feasible methods for lyophobic precipitation of liquid-dispersed or dissolved material (e.g., medicaments) are provided wherein a plurality of individual, open containers () each containing a quantity () of a solution or dispersion are treated within a common pressurizable chamber (). In this process, desired near-supercritical or supercritical temperature and pressure conditions are established for a selected antisolvent gas such as carbon dioxide, and an ultrasonic device () is actuated to generate high energy ultrasonic waves in the chamber (). This leads to intense mixing of the antisolvent with the liquid solution or dispersion within the containers (), with consequent solvent removal and material precipitation.