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. 12, 2023
Filed:
Oct. 14, 2021
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/468 (2006.01); H01G 4/12 (2006.01); H01G 4/30 (2006.01); B32B 18/00 (2006.01); C01G 23/00 (2006.01); C04B 35/626 (2006.01);
U.S. Cl.
CPC ...
H01G 4/30 (2013.01); B32B 18/00 (2013.01); C01G 23/006 (2013.01); C04B 35/4682 (2013.01); C04B 35/62655 (2013.01); C04B 35/62685 (2013.01); H01G 4/1218 (2013.01); H01G 4/1227 (2013.01); C01P 2002/34 (2013.01); C01P 2002/50 (2013.01); C01P 2002/72 (2013.01); C01P 2002/88 (2013.01); C01P 2006/12 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3239 (2013.01); C04B 2235/3256 (2013.01); C04B 2235/3258 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/3267 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/5296 (2013.01); C04B 2235/5409 (2013.01); C04B 2235/663 (2013.01); C04B 2237/346 (2013.01); C04B 2237/68 (2013.01);
Abstract
A manufacturing method of ceramic powder includes mixing a barium carbonate having a specific surface are of 15 m/g or more, a titanium dioxide having a specific surface area of 20 m/g or more, a first compound of a donor element having a larger valence than Ti, and a second compound of an acceptor element having a smaller valence than Ti and having a larger ion radium than Ti and the donor element, and synthesizing barium titanate powder by calcining the barium carbonate, the titanium dioxide, the first compound and the second compound until a specific surface area of the barium titanate powder becomes 4 m/g or more and 25 m/g or less.