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:
Jul. 09, 2024
Filed:
Apr. 06, 2022
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Nobuhiro Yasui, Kanagawa, JP;
Yasushi Shimizu, Kanagawa, JP;
Shunsuke Murakami, Tokyo, JP;
Kanako Oshima, Tokyo, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C 9/10 (2006.01); B22C 7/02 (2006.01); B28B 1/00 (2006.01); B28B 11/04 (2006.01); B28B 11/08 (2006.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B33Y 80/00 (2015.01);
U.S. Cl.
CPC ...
B22C 9/103 (2013.01); B22C 7/02 (2013.01); B22C 9/10 (2013.01); B28B 1/001 (2013.01); B28B 11/04 (2013.01); B28B 11/0845 (2013.01); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 80/00 (2014.12);
Abstract
A casting core containing a ceramic and having sufficient mechanical strength to withstand a casting process over a long period of time and good solubility in alkaline solutions. The casting core includes a core, a surface layer, and an intermediate layer between the core and the surface layer. The intermediate layer has a lower relative density than the surface layer and the core.