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:
Jun. 03, 2025
Filed:
Jul. 21, 2022
Applicant:
Niterra Co., Ltd., Nagoya, JP;
Inventors:
Assignee:
Niterra Co., Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/38 (2006.01); H01T 13/60 (2011.01);
U.S. Cl.
CPC ...
H01T 13/38 (2013.01); H01T 13/60 (2013.01);
Abstract
A spark plug () includes a tubular insulator (). The insulator contains alumina as a primary component, and further contains a secondary component. The secondary component contains a silicon (Si) component, a magnesium (Mg) component, a barium (Ba) component, a calcium (Ca) component, and a rare earth component. The amounts (mass %) of these components as reduced to oxide and relative to the total mass of the secondary component satisfy specific conditions.