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:
Oct. 22, 1985
Filed:
Apr. 08, 1983
Applicant:
Inventors:
Masaaki Miyake, Ibaraki, JP;
Kunihiko Fukumori, Takatsuki, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55487 ; 55528 ; 28104 ;
Abstract
A filter medium comprising one fibrous web or a plurality of piled and integrated fibrous webs is provided. The web or webs are composed mainly of ultra-fine combustible synthetic fibers having a single fiber diameter of 0.1 to 1.5.mu.. The constituent fibers in each web are entangled with one another in various directions and satisfy the following requirements: