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:
Jan. 10, 2023
Filed:
Mar. 28, 2019
Applicant:
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Inventors:
Mamoru Kosakai, Tokyo, JP;
Nobuhiro Hidaka, Tokyo, JP;
Naoto Kimura, Tokyo, JP;
Hironori Kugimoto, Tokyo, JP;
Assignee:
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/683 (2006.01); C04B 35/117 (2006.01); H02N 13/00 (2006.01);
U.S. Cl.
CPC ...
H01L 21/6833 (2013.01); C04B 35/117 (2013.01); H01L 21/683 (2013.01); H01L 21/6835 (2013.01); H02N 13/00 (2013.01);
Abstract
A ceramic substrate made of a dielectric material including silicon carbide particles, which is used as a forming material, in which the number of the silicon carbide particles per unit area on the surface of the substrate is smaller than the number of the silicon carbide particles per unit area in a cross section of the substrate.