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:
Feb. 11, 2003
Filed:
May. 30, 2001
Applicant:
Inventors:
Abbas Lamouri, Fairview Park, OH (US);
Juris Sulcs, Chagrin Falls, OH (US);
Yongwei Gu, Solon, OH (US);
Assignee:
Advanced Lighting Technologies, Inc., Solon, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 9/395 ; H01J 9/40 ;
U.S. Cl.
CPC ...
H01J 9/395 ; H01J 9/40 ;
Abstract
A tipless arc tube for a high intensity discharge lamp and method of manufacture wherein the arc tube may remain open to an uncontrolled atmosphere during the step of hermetically scaling the arc tube. The novel arc tube and method obviate the need to perform any process steps within a controlled atmosphere. The pressure of the fill gas sealed within the arc tube may be controlled by controlling the temperature of the fill gas during the step of hermetically sealing the arc tube. The novel arc tube and method obviate the need to use a pump to control the fill gas pressure.