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:
Jul. 01, 2014
Filed:
Dec. 27, 2012
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Mariko Takagi, Nagoya, JP;
Kenichi Noda, Nagoya, JP;
Nobuhiko Mori, Nagoya, JP;
Masaaki Kawai, Nagoya, JP;
Aya Satoh, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a silica membrane filter having performance of selectively separating an aromatic compound and performance of selectively separating an alcohol. The silica membrane filter is provided with a porous substrate and a silica membrane. The ratio of a He gas permeation amount to an Ngas permeation amount (He gas permeation amount/Ngas permeation amount) is 7 or less, and the ratio of the Ngas permeation amount to a SFgas permeation amount (Ngas permeation amount/SFgas permeation amount) is 1.5 or more.