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:
Jan. 18, 2005
Filed:
May. 21, 2001
Atsushi Suzuki, Hamakita, JP;
Toshinori Oba, Hamakita, JP;
Norihiko Matsushita, Hamakita, JP;
Katsumi Suzuki, Hamakita, JP;
Takeo JO, Tokushima, JP;
Atsushi Suzuki, Hamakita, JP;
Toshinori Oba, Hamakita, JP;
Norihiko Matsushita, Hamakita, JP;
Katsumi Suzuki, Hamakita, JP;
Takeo Jo, Tokushima, JP;
Toyo Roki Seizo Kabushiki Kaisha, Shizuoka, JP;
Awa Paper Mfg. Co., Ltd., Tokushima, JP;
Abstract
There is provided an air filter, which has a long lifetime and permits to capture effectively carbon particles and reduce costs. The air filter has the first filter layerimpregnated with oil and the second filter layer, which is provided on the downstream side of the first filter layerand serves as a lipophobic layer having an oil-repellent property. The filter material of the first filter layerhas a higher density than the filter material of the second filter material