Air filter

- Nitto Denko Corporation
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FIG. 1 is a front elevation view of the design according to an embodiment of the invention.

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a front, right, and top perspective view thereof;

FIG. 8 is a back, left, and bottom perspective view thereof;

FIG. 9 is an enlarged, partial view of the front, right, and top perspective view of FIG. 7;

FIG. 10 is an enlarged, partial front, left, and top perspective view of the invention;

FIG. 11 is a cross-section of the design taken along line 1111 as shown in FIG. 1; and,

FIG. 12 is a cross-section of the design taken along line 1212 as shown in FIG. 1.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design.


The ornamental design for an air filter, as shown and described.

Referenced Cited
U.S. Patent Documents
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D402356 December 8, 1998 Hodge
D425189 May 16, 2000 Gillingham et al.
D449100 October 9, 2001 Sundet et al.
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D538418 March 13, 2007 Pippel et al.
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Patent History
Patent number: D605275
Type: Grant
Filed: Apr 20, 2009
Date of Patent: Dec 1, 2009
Assignee: Nitto Denko Corporation (Osaka)
Inventors: Eizou Kawano (Ibaraki), Youzou Yano (Ibaraki), Takashi Tagou (Ibaraki), Akio Suzuki (Ibaraki)
Primary Examiner: T. Chase Nelson
Assistant Examiner: David G Muller
Attorney: Osha • Liang LLP
Application Number: 29/335,714
Current U.S. Class: Filter (D23/365)