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:
May. 13, 2025
Filed:
Mar. 22, 2021
Dowa Electronics Materials Co., Ltd., Tokyo, JP;
Satoko Sugawara, Tokyo, JP;
DOWA ELECTRONICS MATERIALS CO., LTD., Tokyo, JP;
Abstract
A method is provided for producing a silver powder which has a smaller particle size distribution than the conventional one without changing the type of surface treatment agent, and also for enabling a low resistance when the silver powder is made into a paste to form an electrode. The method for producing a silver powder includes adding an O/W-type emulsion containing micelles of a surface treatment agent having a volume-based cumulative 50% particle diameter Dobtained by a laser diffraction particle size distribution analysis of 1.5 μm or less to a slurry of a silver powder. The dispersibility of the silver powder in the slurry containing the silver powder is then improved.