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:
Jul. 18, 2000
Filed:
Mar. 18, 1998
Applicant:
Inventors:
Jack H Vining, Jr, Coventry, CT (US);
Mark T Meyering, Middlefield, CT (US);
C Thomas Badenhop, Westport, CT (US);
Assignee:
Cuno, Inc., , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ; B05D / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
427244 ; 427245 ; 427246 ; 427412 ; 210490 ;
Abstract
A process for producing a three zone, reinforced, continuous, geometrically symmetrical microporous membrane including a porous support material encapsulated within a middle zone disposed between an upper zone and a lower zone wherein at least one of the three zones has a pore size at least about twenty (20%) percent greater than the pore size of the other two zones is disclosed. Apparatus for fabricating a three zone, reinforced, continuous, geometrically symmetrical, microporous membrane and the fabricated membrane are also disclosed.