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:
Aug. 07, 2001
Filed:
Oct. 06, 1998
Yukihiro Morimoto, Himeji, JP;
Kazuyuki Mori, Himeji, JP;
Kenichi Mituhashi, Tukuba, JP;
Shoji Miyanaga, Takasago, JP;
Other;
Abstract
A sealing body (,) of a tube lamp using a functional gradient material in which proceeding from electrically conductive areas into the vicinity of welds on one side tube (,) and in outer leads (,) oxidation is suppressed, and in which the service life of the tube lamp is prolonged. The sealing body (,) of a tube lamp consist of a functional gradient material which is formed by mixing of a dielectric material and an electrically conductive material, the mixing ratios in the longitudinal direction being different continuously or incrementally, and in which one end forms a dielectric area and the other end forms an electrically conductive area, and by at least one part of the external surface of this electrically conductive area and/or at least one part of outer lead (,) projecting from sealing body (,) being jacketed with an atmosphere shielding layer (,).