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:
Sep. 29, 2009
Filed:
Aug. 04, 2006
Sadahito Goto, Otsu, JP;
Yasunori Matsubara, Wako, JP;
Yoshihiko Kubo, Wako, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
The invention provides an air-cleaner filter material for an internal combustion engine, which comprises a dust-collecting layer comprising a melt-blown nonwoven fabric having a maximum pore size of 100 μm or less and a dust-retaining layer arranged upstream of the dust-collecting layer and laminated integrally by heat fusion with, the dust-collecting layer, comprising a thermal-bond nonwoven fabric having fibers with two or more fiber diameters arranged in the order of increasing the proportion of smaller fiber diameter in the direction from the upstream to downstream side, wherein the in-plane of the filter material has a portion of high fiber density and a portion of low fiber density, and the portion of high fiber density occurs in a lattice pattern.