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. 07, 2025
Filed:
Feb. 28, 2022
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Hiromasa Takahashi, Tokyo, JP;
Shin Yabuuchi, Tokyo, JP;
Naoto Fukatani, Tokyo, JP;
Futoshi Furuta, Tokyo, JP;
Jun Hayakawa, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 3/08 (2006.01); B01J 19/12 (2006.01); B01J 35/39 (2024.01); C01B 3/04 (2006.01); C01B 3/50 (2006.01); C25B 1/04 (2021.01); C25B 1/55 (2021.01); C25B 9/23 (2021.01); C25B 15/08 (2006.01);
U.S. Cl.
CPC ...
C01B 3/08 (2013.01); B01J 19/127 (2013.01); B01J 35/39 (2024.01); C01B 3/042 (2013.01); C01B 3/50 (2013.01); C25B 1/04 (2013.01); C25B 1/55 (2021.01); C25B 9/23 (2021.01); C25B 15/083 (2021.01); C01B 2203/0277 (2013.01); C01B 2203/04 (2013.01);
Abstract
A hydrogen production apparatus including a photocatalyst and generating hydrogen from water includes a wavelength separation unit separating sunlight by wavelength, an infrared light conversion unit converting infrared light separated by the wavelength separation unit to visible light, and an ultraviolet light conversion unit converting ultraviolet light separated by the wavelength separation unit to visible light.