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:
Nov. 10, 2026
Filed:
Nov. 18, 2021
Kyungdong Navien Co., Ltd., Pyeongtaek-si, KR;
Jun Kyu Park, Seoul, KR;
Duck Sik Park, Seoul, KR;
Dong Hwan Kim, Seoul, KR;
Seong Sik Moon, Seoul, KR;
KYUNGDONG NAVIEN CO., LTD., Pyeongtaek-si, KR;
Abstract
Disclosed is an air heating apparatus including a burner that causes a combustion reaction, a main passage, through which water flows while circulating, a heat exchanging device that receives heat from combustion gas generated by the combustion reaction and heats the water flowing along the main passage, a heating heat exchanger that receives the water heated by the heat exchanging device and exchanges heat with the air for heating, a fan that blows the air to the heating heat exchanger, and an expansion tank disposed in the main passage to accommodate a change in a volume of the water and having an expansion opening opened to an outside.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile