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:
Oct. 23, 1984
Filed:
Sep. 02, 1982
Applicant:
Inventor:
Ranbir S Bhalla, Pine Brook, NJ (US);
Assignee:
North American Philips Lighting Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313628 ; 313630 ; 3133 / ;
Abstract
Sintering aids are disclosed which improve the sintering of emission materials in high pressure discharge lamps. The sintering aid is Nb.sub.2 O.sub.5 or Ta.sub.2 O.sub.5 or a mixture thereof along with an alkaline earth oxide with is mixed in the amount of 2 to 15 weight percent sintering aid with 98 to 85 weight percent electron emissive material.