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. 24, 2023
Filed:
Jan. 10, 2019
Applicant:
Nisshin Engineering Inc., Tokyo, JP;
Inventors:
Assignee:
NISSHIN ENGINEERING INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/02 (2006.01); B22F 3/02 (2006.01); B22F 1/054 (2022.01); B22F 1/142 (2022.01); B22F 1/102 (2022.01); B22F 9/12 (2006.01);
U.S. Cl.
CPC ...
H01B 1/02 (2013.01); B22F 1/054 (2022.01); B22F 1/102 (2022.01); B22F 1/142 (2022.01); B22F 3/02 (2013.01); B22F 9/12 (2013.01); B22F 2301/10 (2013.01); B22F 2304/054 (2013.01);
Abstract
Provided are copper microparticles which have exceptional oxidation resistance, in which oxidation is reduced even when the copper microparticles are held at a firing temperature in an oxygen-containing atmosphere, and in which sintering also occurs. The copper microparticles have a particle diameter of 10-100 nm, have a surface coating material, and are such that, after the copper microparticles are held for one hour at a temperature of 400° C. in an oxygen-containing atmosphere, the particle diameter exceeds 100 nm while a copper state is retained.