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:
Jan. 06, 2009
Filed:
Nov. 29, 2005
Applicants:
Antony John Tambinl, Loughborough, GB;
Matthew Bugenske, Cleveland Heights, OH (US);
Inventors:
Antony John Tambinl, Loughborough, GB;
Matthew Bugenske, Cleveland Heights, OH (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 17/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A low wattage mercury vapor lamp comprises a discharge vessel () including a tubular body (), first and second electrodes () and two end walls (), which close opposite ends of the tubular body. The discharge vessel contains an ionizable fill material having a concentration of mercury of from 0.10 to 0.20 mg/mm. The discharge vessel operates at elevated pressures of from 80 to 170 atmospheres at power of 20 watts resulting in improved lumen maintenance and reduced through-life color shift.