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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.:

US 5565157 B1

PDFFull Text
Date of Patent:
Oct. 15, 1996

Filed:

May. 31, 1995

Method of making a spark plug insulator

Applicant:
Inventors:

Makoto Sugimoto, Nagoya, JP;

Masahiro Konishi, Nagoya, JP;

Hiroyuki Tanabe, Nagoya, JP;

Kenichi Nishikawa, Nagoya, JP;

Assignee:

NGK Spark Plug Co., Ltd., Nagoya, JP;

Attorney:

Sughrue, Mion, Zinn, Macpeak & Seas

Primary Examiner:

Donald E Czaja

Assistant Examiner:

Sean Vincent

Int. Cl.
CPC ...
B29C / ; B29D / ;
U.S. Cl.
CPC ...
264101 ; 264122 ;
Abstract

In a spark plug insulator for use in an internal combustion engine, a sintered body has boron nitride and a metal oxide, the boron nitride of the sintered body being 80% or exceeding 80% by weight, and the sintered body having a thermal expansion coefficient of less than 5.0.times.10-.sup.6 /.degree.C. The metal oxide is selected alone or combination from the group consisting of magnesium oxide, calcium oxide, silicon oxide, boron oxide, yttrium oxide and aluminum oxide.

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Sugimoto, Makoto. (1996). Method of making a spark plug insulator (U.S. Patent No. 5565157). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5565157

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