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. 22, 1994
Filed:
Oct. 26, 1992
Applicant:
Inventor:
Mitsuo Yoshida, Tokyo, JP;
Assignee:
Mitsubishi Paper Mills Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210488 ; 210491 ; 55486 ; 55524 ; 55DI / ;
Abstract
A two-layered filter medium for liquid filtration comprises a support composed of organic fibers of 7 .mu.m or more in diameter and basis weight of 30-150 g/m.sup.2, and a filtering layer composed of three kinds of organic fibers different in diameter, a part or all of the kind of organic fibers having the largest diameter being a fibrous organic binder.