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:
Feb. 23, 2021
Filed:
Aug. 25, 2017
Hitachi Chemical Company, Ltd., Tokyo, JP;
National University Corporation Hokkaido University, Hokkaido, JP;
Shuichiro Adachi, Tokyo, JP;
Masaki Kitagawa, Tokyo, JP;
Seiichi Watanabe, Sapporo, JP;
Lihua Zhang, Sapporo, JP;
Noriyuki Okinaka, Sapporo, JP;
Dai Takai, Sapporo, JP;
Showa Denko Materials Co., Ltd., Tokyo, JP;
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, Hokkaido, JP;
Abstract
A nanocrystal production method includes a light irradiation step of applying light to a surface of a metal material immersed in water to form nanocrystals on the surface. In this nanocrystal production method, the metal material contains iron, the nanocrystal contains at least one of iron oxide and iron hydroxide, and in the spectrum of the light, a wavelength at which the intensity is maximum is not less than 360 nm and less than 620 nm.