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:
Nov. 04, 2025
Filed:
Jan. 31, 2020
Jfe Steel Corporation, Tokyo, JP;
Jfe Mineral Company, Ltd., Tokyo, JP;
Mikito Suto, Tokyo, JP;
Hiroyuki Masuoka, Tokyo, JP;
Akira Matsuzaki, Tokyo, JP;
Rintaro Nagano, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
JFE MINERAL COMPANY, LTD., Tokyo, JP;
Abstract
A positive electrode active material for a lithium-ion secondary cell having exceptional lithium ion conductivity, the positive electrode active material being such that the absorption of moisture from the atmosphere can be suppressed. This positive electrode active material for a lithium-ion secondary cell has powder particles that include a specific composite oxide, and an organic silicon compound affixed to the surface of the powder particles, the organic functional groups of the organic silicon compound including at least one selected from the group made of C2-10 alkyl groups and C6-14 aryl groups.