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:
Mar. 03, 2020
Filed:
Aug. 08, 2019
Applicant:
Gigaphoton Inc., Tochigi, JP;
Inventors:
Atsushi Ueda, Tochigi, JP;
Akihiro Takayama, Tochigi, JP;
Assignee:
Gigaphoton Inc., Tochigi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05G 2/00 (2006.01); G03F 7/20 (2006.01);
U.S. Cl.
CPC ...
H05G 2/008 (2013.01); G03F 7/20 (2013.01); G03F 7/70033 (2013.01);
Abstract
An extreme ultraviolet light generation apparatus includes: a chamber; an EUV light focusing mirror located in the chamber; and a hydrogen gas release unit that is located in the chamber and includes an opening configured to release a hydrogen gas inward from around the EUV light focusing mirror and a first cooling medium channel through which a cooling medium passes.