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. 19, 2005
Filed:
Jan. 22, 2001
Timothy B. Meluch, Miramar, FL (US);
Chung-yuan Chiang, Pembroke Pines, FL (US);
Hamid Jaanine, Fort Lauderdale, FL (US);
Thanh Nguyen, Pembroke Pines, FL (US);
John M. Radovich, Fort Lauderdale, FL (US);
Kees Ruzius, Miami, FL (US);
Lalith K. Silva, Chamblee, GA (US);
George Washington, Miramar, FL (US);
Timothy B. Meluch, Miramar, FL (US);
Chung-Yuan Chiang, Pembroke Pines, FL (US);
Hamid Jaanine, Fort Lauderdale, FL (US);
Thanh Nguyen, Pembroke Pines, FL (US);
John M. Radovich, Fort Lauderdale, FL (US);
Kees Ruzius, Miami, FL (US);
Lalith K. Silva, Chamblee, GA (US);
George Washington, Miramar, FL (US);
Baxter International Inc., Deerfield, IL (US);
Abstract
The present invention discloses, inter alia, a composition useful for producing a hemogeneous, semipermeable membrane, the composition comprising (1) a polysulfone compounds, (2) a solvent, such as sulfolane, antypyrine, δvalerolactam, diethyl phthalate, and mixtures thereof, and (3) a non-solvent, such as poly(ethylene glycol), di(ethylene glycol), tri(ethylene glycol), glycerol, and mixtures thereof. Another aspect of this invention discloses methods for fabricating semipermeable membranes by homogeneously mixing the composition of the polysulfone compound, solvent, and non-solvent, melting the composition, and melt-spinning the molten composition. Another aspect of the present invention includes homogeneous, melt-spun, semipermeable membranes useful for liquid separation processes, such as, but not limited to, microfiltration, ultrafiltration, dialysis, and reverse osmosis.