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:
Mar. 05, 2002
Filed:
Jan. 24, 2000
Soichiro Sakata, Kanagawa-ken, JP;
Katsumi Sato, Kanagawa-ken, JP;
Hideto Takahashi, Kanagawa-ken, JP;
Takao Okada, Tokyo, JP;
Takasago Thermal Engineering Co., Ltd., Tokyo, JP;
Abstract
The present invention relates to an air filter having an inorganic material layer in which the following adsorbent is fixed on the surface of the supporter using powder of an inorganic substance as a binder. That is, the adsorbent is prepared by impregnating a salt of an inorganic acid to powder of an inorganic substance consisting of at least one of diatom earth, silica, alumina, a mixture of silica and alumina, aluminum silicate, activated alumina, porous glass, activated clay, activated bentonite, or synthetic zeolite. The air filter according to the present invention can adsorb and remove both of gaseous basic impurities and gaseous organic impurities, thus making a very effective filter for manufacturing semiconductor and LCD.