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:
Jun. 23, 2020
Filed:
Aug. 15, 2017
Ihi Corporation, Tokyo, JP;
Ihi Machinery and Furnace Co., Ltd., Tokyo, JP;
Kazuhiko Katsumata, Inuyama, JP;
IHI CORPORATION, Tokyo, JP;
IHI MACHINERY AND FURNACE CO., LTD., Tokyo, JP;
Abstract
A heat treatment device includes: a heat treatment chamber which accommodates an object to be treated; a cooling gas supply unit which supplies a cooling gas into the heat treatment chamber; a cooling gas circulation unit which circulates the cooling gas in the heat treatment chamber; and a gas purge unit which gas-purges, with an inert gas, a portion in which there is a possibility of mixing of the cooling gas supplied into the heat treatment chamber and an oxygen gas, in which the cooling gas supply unit supplies a hydrogen gas into the heat treatment chamber as the cooling gas.