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:
Jun. 02, 1998
Filed:
Feb. 26, 1996
Applicant:
Inventors:
Donald James Stavely, Fort Collins, CO (US);
Oscar R Herrera E, Greeley, CO (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313491 ; 313607 ; 313493 ; 313634 ;
Abstract
An electrode for an external electrode fluorescent lamp. The lamp has intensity striations. The electrode has a periodic non-uniform area sufficient to cause a periodic non-uniformity in the electric field between two electrodes. The non-uniformity of the electric field is sufficient to prevent wandering of the striations. The striations have a range of pitch. The pitch of the area in the electrode is within the range of pitch of the intensity striations. Examples of non-uniform areas include serrated or sinusoidal edges and circumferential slits.