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:
Sep. 01, 2026
Filed:
Aug. 25, 2022
Applicant:
Ihi Corporation, Tokyo, JP;
Inventor:
Yasuyuki Fukushima, Tokyo, JP;
Assignee:
IHI CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 3/18 (2006.01); C22B 11/00 (2006.01);
U.S. Cl.
CPC ...
C22B 3/18 (2013.01); C22B 11/04 (2013.01);
Abstract
A method for recovering a metal from a metal element-containing substance includes: bringing a metal element-containing substance into contact with a dissolving solution containing nitric acid and a salt to obtain a solution containing a metal ion or metal complex ion; and immersing an alga in the solution containing a metal ion or metal complex ion to produce a metal, wherein the concentration of nitric acid in the dissolving solution containing nitric acid and a salt is 2 to 50 mass %, and wherein the concentration of the salt in the dissolving solution containing nitric acid and a salt is 0.5 mass % or more.