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:
Dec. 10, 2013
Filed:
Jan. 25, 2010
Applicants:
Yasushi Ogino, Kyoto, JP;
Kiyoshi Tsutsumi, Hyogo, JP;
Toshiaki Murai, Osaka, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 61/35 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light emitting device includes a glass bulb and a reflective film formed in a region having an angle of at least 230° on an outer peripheral surface of the glass bulb. The light emitting device can obtain the reflective film having a sufficient film thickness in a wide region on an outer peripheral surface of an electric discharge tube and has a uniform light intensity distribution.