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:
Aug. 23, 2022
Filed:
Feb. 12, 2013
Applicant:
Dowa Electronics Materials Co., Ltd., Tokyo, JP;
Inventors:
Koji Hirata, Saitama, JP;
Noriaki Nogami, Saitama, JP;
Assignee:
DOWA ELECTRONICS MATERIALS CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/02 (2006.01); H01B 1/22 (2006.01); B22F 1/00 (2022.01); B22F 1/065 (2022.01); B22F 9/24 (2006.01); B22F 1/0655 (2022.01); B22F 1/054 (2022.01);
U.S. Cl.
CPC ...
H01B 1/22 (2013.01); B22F 1/0003 (2013.01); B22F 1/0549 (2022.01); B22F 1/065 (2022.01); B22F 1/0655 (2022.01); B22F 9/24 (2013.01); H01B 1/02 (2013.01); B22F 2202/01 (2013.01); B22F 2202/11 (2013.01); B22F 2301/255 (2013.01);
Abstract
While a water reaction system containing silver ions is irradiated with ultrasonic waves to cause cavitation therein, a reducing agent containing solution, which contains an aldehyde as a reducing agent, is mixed with the water reaction system to deposit silver particles, the solid-liquid separation of which is carried out, and thereafter, the separated silver particles are washed and dried to produce a spherical silver powder which has a closed cavity in each particle thereof.