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. 26, 2026
Filed:
Sep. 06, 2021
Mitsui Kinzoku Company, Limited, Tokyo, JP;
Abstract
A conductive composition for bonding includes a mix of copper powder carboxylic acid. The carboxylic acid has a branched carbon chain. The copper powder comprises first and second copper particles. The first copper particles have a volume-based cumulative particle size Dof 0.11 μm or more and less than 1 μm at a cumulative volume of 50 vol % in a region of particle sizes of less than 1 μm in a particle size distribution of the copper powder. The second copper particles have a volume-based cumulative particle size Dof 1 μm or more and 10 μm or less at a cumulative volume of 50 vol % in a region of particle sizes of 1 μm or more in the particle size distribution of the copper powder. The carboxylic acid is contained in an amount of 6 parts or more and 24 parts or less per 100 parts by mass.