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:
Dec. 19, 2023
Filed:
Sep. 16, 2020
Ngk Insulators, Ltd., Nagoya, JP;
Kyohei Atsuji, Nagoya, JP;
Noboru Nishimura, Nagoya, JP;
Asumi Nagai, Nagoya, JP;
Yuji Katsuda, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
The composite sintered body includes AlO, and MgAlO. The content of AlOin the composite sintered body is not less than 95.5% by weight. The average sintered grain size of AlOin the composite sintered body is not less than 2 μm and not greater than 4 μm. The standard deviation of sintered grain size distribution of AlOin the composite sintered body is not greater than 0.35. The bulk density of the composite sintered body is not less than 3.94 g/cmand not greater than 3.98 g/cm. In the composite sintered body, the ratio of amount of crystal phase of MgAlOto that of AlOis not less than 0.003 and not greater than 0.01.