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:
Aug. 29, 1989
Filed:
May. 19, 1988
Applicant:
Inventor:
Morio Abe, Shiga, JP;
Assignee:
Chisso Corporation, Ohsaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
D04H / ;
U.S. Cl.
CPC ...
428 363 ; 57905 ; 57908 ; 156167 ; 264103 ; 428221 ; 428222 ; 428296 ; 428299 ; 428373 ;
Abstract
A superior cylindrical filter having a long filtration life is provided, which filter is obtained by using interlaced filaments comprising 20% by weight or more of hot-melt-adhesive composite filaments composed of plurality of components having a melting point difference of 20.degree. C. or more and having two or more interlaced portions per meter of which the interlacing strength is 15.times.D mg or more, wound up on a core material in a cylindrical form under a tension of 15.times.D mg or less, the contact points of the interlaced filaments being bonded by melt-adhesion of the low melting component of the composite filaments.