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:
Jun. 10, 2003
Filed:
May. 11, 2001
Theodorus Peterus Cornelis Maria Vos, Eindhoven, NL;
Catharina Johanna Maria Daemen, Eindhoven, NL;
Francis Jozef Clementina Vandyck, Turnhout, BE;
Hendrik Anton Van Esveld, Eindhoven, NL;
Johannes Jacobus Franciscus Geijtenbeek, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The electric high-pressure discharge lamp has tungsten electrodes ( ) in a light-transmitting lamp vessel ( ) which is closed in a gastight manner. The electrodes ( ) comprise an emitter, preferably in the form of an inner coiled-coil ( ), which is loosely retained in a cavity ( ) of a basket ( ) of the electrode ( ). The inner coil ( ) acts as a non-oxidic emitter. The lamp retains its initial light output to a high degree throughout its life.