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:
Oct. 25, 2022
Filed:
Aug. 20, 2018
Applicant:
Mitsubishi Paper Mills Limited, Tokyo, JP;
Inventor:
Kengo Yamane, Tokyo, JP;
Assignee:
MITSUBISHI PAPER MILLS LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 19/72 (2006.01); F28D 21/00 (2006.01); D21H 19/38 (2006.01); D21H 21/22 (2006.01); F24F 3/147 (2006.01);
U.S. Cl.
CPC ...
F28D 21/0015 (2013.01); D21H 19/385 (2013.01); D21H 19/72 (2013.01); D21H 21/22 (2013.01); F24F 3/147 (2013.01);
Abstract
Total heat exchange element paper having excellent moisture resistance and gas barrier properties, comprising a substrate sheet and a moisture absorbent and colloidal silica both of which are adhered to the substrate sheet, wherein the substrate sheet contains natural pulp which has been beaten to a freeness specified in JIS P 8121-1:2012 of not lower than 80° SR and the colloidal silica is cationic colloidal silica.