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. 21, 1987
Filed:
Jan. 02, 1986
Applicant:
Inventors:
Tadashi Kawabe, Ako, JP;
Masafumi Kobune, Ako, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501108 ; 1062 / ; 106306 ;
Abstract
This disclosure relates to an electrically insulating filler for sheathed heaters. The filler includes globular and nonglobular particles containing at least 95 wt. % MgO, and the percentage of globular particles being at least 5 wt. %. The globular magnesia includes at least one single magnesia or a combination of magnesias selected from groups of sintered magnesias and electro-fused magnesias.