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:
Sep. 30, 2025
Filed:
Oct. 12, 2023
Sumitomo Electric Industries, Ltd., Osaka, JP;
Kotaro Hirose, Osaka, JP;
Masahiro Adachi, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A thermoelectric conversion material includes, a base material composed of SiGe, a first additive element functioning as a dopant, a second additive element different from the first additive element, and oxygen. The second additive element includes at least one of Mg, Ca, and Ti. A content ratio of the second additive element relative to the base material is 0.5 at % to 5 at %. In a rectangular area of a section of the base material, the rectangular area being selected such that a grain boundary intersects opposite sides of the rectangular area, a distribution of the second additive element and the oxygen has a positive correlation. A correlation coefficient of the correlation is in a range of 0.2 or more and less than 1.0.