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:
Apr. 14, 2015
Filed:
Mar. 23, 2011
Satoru Furuyama, Osaka, JP;
Yozo Nagai, Osaka, JP;
Junichi Moriyama, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A water-proof air-permeable filter () includes: a resin film () having formed therein a plurality of through pores (); and a treated layer () having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film () such that the treated layer () has openings () at positions corresponding to the through pores (). The through pores () each have a predetermined size larger than or equal to 0.01 μm and smaller than or equal to 10 μm, and are uniformly distributed such that a density of the through pores falls within specific limits included in a range from 10 to 1×10pores/mm.