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. 14, 1981
Filed:
Jun. 18, 1979
Gerardus A Vrijssen, Eindhoven, NL;
Johannes P Franssen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An electric discharge tube is provided with a hermetically sealed leadthrough which electrically connects electrodes on the inner and outer walls of the envelope. The leadthrough consists of an aperture in the envelope having a conductive layer provided on the wall of the aperture. The aperture is hermetically sealed by means of a plug of thermally devitrified glass which is provided in the form of a suspension of a devitrified glass powder in an organic binder. To manufacture the leadthrough, the envelope of the tube is subjected to temperature treatments in which at a first temperature range the binder is fired from the suspension in an oxygen-containing atmosphere, and at a second temperature range the devitrifiable glass is devitrified in a non-oxidizing atmosphere. A hermetically sealed leadthrough results, without excessive oxidation of the electrodes, while the deformation of the glass envelope at the area of the leadthrough is avoided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile