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:
Sep. 29, 1992
Filed:
Mar. 18, 1991
Applicant:
Inventors:
Thanh D Nguyen, Billerica, MA (US);
Christopher M Hubby, Newton, MA (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 41 ; 264179 ; 264180 ; 264184 ; 2642091 ;
Abstract
Microporous hollow fiber polysulfone membranes can be prepared continuously by using a particular combination of casting solution and precipitation solution formulations, and casting conditions. The concentration of components in the precipitation solution are adjusted continuously to maintain original concentrations. The membranes are characterized by high quality, consistent performance and uniform porosity throughout the membrane.
Nguyen, Thanh. (1992). Process for continuous spinning of hollow-fiber membranes using a (U.S. Patent No. 5151227). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5151227
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile