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:
Feb. 22, 2000
Filed:
Aug. 26, 1997
Sugio Miyazawa, Kasugai, JP;
Michio Asai, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
A process to produce a ceramic tube for a metallic halide lamp, comprising the steps of forming an integrally molded body composed of an electrode member-inserting portion and an annular portion located around an outer periphery of the electrode member-inserting portion, inserting the annular portion of the integrally molded body into an open end portion of a molded cylindrical tubular body in a state that each of the integrally molded body and the molded tubular body is used as molded or after being calcined, thereby forming an assembled body, and firing the assembled body, thereby forming an integrally fired body composed of the electrode member-inserting portion and the annular portion, whereas the annular portion and the tubular body are sintered to each other by firing in a state that radial press fitting forces act between the annular portion and the tubular body, the ceramic tube being constituted by the cylindrical tubular body containing a discharging space with open end portions at both ends thereof, the annular portions provided at the open end portions of the tubular body, and electrode member-inserting portions fixed at the opposite ends of the tubular body through the annular portions, respectively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile