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. 14, 2026
Filed:
Oct. 04, 2021
Applicant:
Hokuetsu Corporation, Nagaoka, JP;
Inventors:
Nozomi Tashiro, Nagaoka, JP;
Masashi Sato, Nagaoka, JP;
Assignee:
HOKUETSU CORPORATION, Nagaoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/20 (2006.01); B01D 39/16 (2006.01); D04H 1/4218 (2012.01); D04H 1/587 (2012.01); D04H 1/645 (2012.01); D06M 13/203 (2006.01); D06M 13/395 (2006.01); D06M 13/50 (2006.01); D06M 13/53 (2006.01); D06M 101/00 (2006.01); D21H 13/40 (2006.01); D21H 17/57 (2006.01); D21H 21/16 (2006.01); D21H 27/08 (2006.01);
U.S. Cl.
CPC ...
B01D 39/2024 (2013.01); B01D 39/163 (2013.01); D04H 1/4218 (2013.01); D04H 1/587 (2013.01); D04H 1/645 (2013.01); D06M 13/203 (2013.01); D06M 13/395 (2013.01); D06M 13/50 (2013.01); D06M 13/53 (2013.01); D21H 13/40 (2013.01); D21H 17/57 (2013.01); D21H 21/16 (2013.01); D21H 27/08 (2013.01); B01D 2239/0464 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/086 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1258 (2013.01); B01D 2239/1291 (2013.01); D06M 2101/00 (2013.01); D06M 2200/12 (2013.01); D10B 2401/021 (2013.01); D10B 2401/063 (2013.01); D10B 2505/04 (2013.01);
Abstract
A filter medium for an air filter is composed of a wet-laid nonwoven fabric. The filter medium contains a binder resin and a water repellent. The water repellent contains, as a main component, a hydrocarbon-based polymer free of fluorine and silicon in a molecule thereof. The binder resin and the water repellent are crosslinked by an isocyanate crosslinking component.
Tashiro, Nozomi. (2026). Filter material for air filter and method for producing filter material (U.S. Patent No. 12678724). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12678724
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile