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:
Dec. 08, 1998
Filed:
Feb. 11, 1997
Applicant:
Inventor:
Sumio Ohtani, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2104932 ; 21050027 ; 21050041 ; 210506 ; 427244 ; 427245 ; 264425 ; 264446 ;
Abstract
The microfiltration membrane cartridge filter is formed by pleating a porous membrane sheet having a mean pore size of 0.05 to 10 .mu.m, rounding the sheet in the form of a cylinder, liquid-tightly sealing joints of the rounded sheet and liquid-tightly sealing opposite ends of the cylinder by end plates, wherein pores in the opposite end portions of the cylindrical pleated membrane are filled up with a high molecular-weight polymer to reject the liquid-permeation of the opposite end portions of the cylindrical pleated membrane. The microfiltration membrane cartridge filter can be made wet to water easily so that an integrity test for the filter is carried on easily.