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. 05, 2000
Filed:
Dec. 17, 1998
Applicant:
Inventor:
Hiroaki Nihonmatsu, Tajimi, JP;
Assignees:
NGK Insulators, Ltd., , JP;
NGK Adrec Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501120 ; 501121 ;
Abstract
There is provided a jig for use in firing of ferrite-made member (e.g. deflection yoke). The jig contains MgO.Al.sub.2 O.sub.3 spinnel as the main component. In the jig, the molar ratio of total MgO and total Al.sub.2 O.sub.3 is 25:75 to 75:25; and RO, which is at least one kind of oxide selected from the group consisting of ZnO, CuO, MnO, NiO, CaO, SrO, BaO, PbO and CdO, is contained in an amount of 0 to 25 mole % per 100 mole % of the sum of total MgO and total Al.sub.2 O.sub.3. This jig is unreactive to a material (e.g. deflection yoke) to be fired and consequently gives rise to no dimensional change of the material to be fired.