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. 10, 2020
Filed:
Mar. 23, 2018
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Katsuhiro Kawakubo, Ome, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Abstract
A ruthenium oxide powder having a rutile crystal structure is provided, wherein a crystallite diameter D1, calculated from a peak of a (110) plane measured by an X-ray diffraction method, is 25 nm or more and 80 nm or less, a specific surface area diameter D2, calculated from a specific surface area, is 25 nm or more and 114 nm or less, and a ratio of the crystallite diameter D1 (nm) to the specific surface area diameter D2 (nm) satisfies a following formula (1).0.70≤1/2≤1.00  (1)
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