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. 09, 2025
Filed:
Mar. 25, 2021
Applicants:
Tomoharu Asano, Hyogo, JP;
Hidetoshi Kami, Shizuoka, JP;
Ryota Inoue, Shizuoka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 50/15 (2023.01); H10K 30/50 (2023.01); H10K 50/11 (2023.01); H10K 71/60 (2023.01); H10K 77/10 (2023.01); H10K 85/30 (2023.01);
U.S. Cl.
CPC ...
H10K 50/15 (2023.02); H10K 30/50 (2023.02); H10K 50/11 (2023.02); H10K 71/60 (2023.02); H10K 77/10 (2023.02); H10K 85/371 (2023.02);
Abstract
Metal oxide particles have p-type semiconductivity. The metal oxide particles have a volume-based particle size distribution having a first local maximum value and a second local maximum value. The first local maximum value is in a range of 0.1 μm or more and less than 5 μm, and the second local maximum value is in a range of 5 μm or more and less than 50 μm. A ratio of the second local maximum value to the first local maximum value is 0.5 or more and less than 2.0. 99% by volume or more of the metal oxide particles have a particle diameter in a range of from 0.1 to 50 μm.