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. 24, 2007
Filed:
Aug. 08, 2002
Applicants:
Tomoaki Ohya, Ichihara, JP;
Makoto Nakahara, Otsu, JP;
Inventors:
Tomoaki Ohya, Ichihara, JP;
Makoto Nakahara, Otsu, JP;
Assignees:
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Toray Industries, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a heat resistant filter of which the reduction of tensile strength and folding endurance is small even when used as a filter material for a filter used at high temperatures, failure of the filter material is difficult even when used at high temperatures, and which is capable of achieving a long life. The heat resistant filter contains: a heat resistant organic fiber base material, and a resin composition which contains an alkaline substance and which adheres to the heat resistant organic fiber base material.