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:
Mar. 31, 2000
Nami Hirata, Shiga, JP;
Yoichi Fujumura, Shiga, JP;
Hideo Saruyama, Shiga, JP;
Masaki Amano, Chiba, JP;
Toray Industries, Inc., , JP;
Abstract
A chemical filter unit, which comprises a filter medium formed by laminating a plurality of fiber sheets an a housing the filter medium, and has a gas inlet open on one face of the housing and a gas outlet open on the other face substantially in opposite to the gas inlet, characterized in that gas passages to allow the flow of the gas along the surfaces of the fiber sheets are formed between the respectively adjacent fiber sheets of the filter medium from the gas outlet to the gas outlet, and that the adsorption capacity of the filter medium is 300 eq/m or more. It is preferable that the fibers constituting the fiber sheets are ion exchange fibers.