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. 30, 1985
Filed:
Jun. 21, 1982
Applicant:
Inventors:
Ian Connor, Leicester, GB;
Paul V Crawshaw, Leicester, GB;
Assignee:
Thorn EMI plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01K / ;
U.S. Cl.
CPC ...
313579 ; 313637 ;
Abstract
The invention provides a tungsten halogen linear incandescent lamp having a gas fill comprising a mixture of CHI.sub.3 and (PNBr.sub.2).sub.3. Gas fills according to the invention comprise from 6 to 32 micrograms of (PNBr.sub.2).sub.3 per c.c. of the lamp internal volume with a ratio of CHI.sub.3 to (PNBr.sub.2).sub.3 of from 1:1 to 5:1 and result in lamps having a increased efficacy and a life of more than 2,000 hours.