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. 23, 1993
Filed:
Feb. 26, 1992
Applicant:
Inventors:
Zhengxin Wang, Boston, MA (US);
Richard A Laursen, Newton, MA (US);
Assignee:
Trustees of Boston University, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21032184 ; 210638 ; 422101 ;
Abstract
A chemically modified membrane is positioned between a first template having a first set of holes and a second set of holes aligned with the first set of holes to define a plurality of exposed portions of the membrane in such as manner as to prevent collapse of pores in the membrane during application of a differential pressure across the membrane.