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. 09, 2005
Filed:
Feb. 07, 2003
Seiichi Tanaka, Saitama, JP;
Akira Terasaki, Saitama, JP;
Tatsuya Sagano, Saitama, JP;
Hideyo Uehara, Saitama, JP;
Hiroto Koura, Hyogo, JP;
Tsumoru Okada, Hyogo, JP;
Shinsuke Mizuta, Hyogo, JP;
Takatsugu Miura, Hyogo, JP;
Seiichi Tanaka, Saitama, JP;
Akira Terasaki, Saitama, JP;
Tatsuya Sagano, Saitama, JP;
Hideyo Uehara, Saitama, JP;
Hiroto Koura, Hyogo, JP;
Tsumoru Okada, Hyogo, JP;
Shinsuke Mizuta, Hyogo, JP;
Takatsugu Miura, Hyogo, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Tigers Polymer Corporation, Toyonaka, JP;
Abstract
A filter element comprises an oil-impregnated filtering member, and a transmission preventing layer formed on a downstream side of the filtering member, for restricting transmission of at least the carbon dusts from the oil-impregnated filtering member. The filtering member may be formed like a ridge-like-folded structure. The transmission preventing layer may be formed of a coating layer having a resistance against a viscous oil that is impregnated in the filtering member. This coating layer may be formed uniformly as a whole or the thickness or the content of the coating layer may be increased partially. A ventilation shutting-off member (filling layer) may be formed as the transmission preventing layer in the root portion areas of the ridge portions. The transmission preventing layer may comprise a resistant component that is insoluble in the oil that is impregnated in the filtering member.