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:
Jan. 31, 1995
Filed:
May. 10, 1993
Applicant:
Inventors:
Richard M McDonogh, Stuttgart, DE;
Hermann J Gohl, Bisingen-Zimmern, DE;
Reinhold J Buck, Alleshausen, DE;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2105003 ; 21050041 ; 21050027 ; 264 48 ;
Abstract
A method for drying porous ultrafiltration membranes by the use of heat and possibly also at reduced pressure is characterized in that prior to the application of heat the pores of the membranes are at least partially filled with a solution of a water-soluble organic solid which swells the membranes and which has a melting point above 35.degree. C. in an organic solvent which is completely miscible with water and which does not change the membrane structure.