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:
Sep. 14, 2004
Filed:
Sep. 23, 2002
Norikazu Niimi, Kasugai, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A high pressure discharge lamp A has a light emitting vessel A made of a semitransparent ceramic material and having a pair of end portions each with an opening formed in the end portion and a light emitting portion , a pair of discharge electrodes , and electrode supporting members each supporting the electrode and fixed to the end portion . The vessel A defines an inner space with an ionizable light emitting substance and starter gas filled in the inner space . The electrodes are contained in the inner space . The light emitting portion has a thicker portion and a thinner portion . The thinner portion has a cross sectional area of not smaller than 35 percent and not larger than 80 percent of that of the thicker portion so that the light emitting portion has a brightness center in the thinner portion
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile