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:
Feb. 04, 1992
Filed:
Jul. 24, 1989
Applicant:
Inventors:
Paul E Grimshaw, Arlington, MA (US);
Alan J Grodzinsky, Lexington, MA (US);
Martin L Yarmush, Sharon, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ; B01D / ;
U.S. Cl.
CPC ...
2041821 ; 2041823 ; 2041826 ; 2041801 ; 204301 ;
Abstract
This invention pertains to a method of dynamically controlling the transport of a molecule across a polyelectrolyte membrane whereby chemical modulation of the electrostatic swelling forces in the polyelectrolyte membrane results in large changes in permeability and selectivity and a transmembrane electric field having electroosmotic, electrophoretic and electrostatic effects combine to allow the selective transport of the molecule across the membrane.