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:
Aug. 26, 2003
Filed:
Jun. 20, 2000
Applicant:
Inventors:
Toshiaki Mitobe, Shizuoka, JP;
Koichi Nakamura, Shizuoka, JP;
Assignee:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 6/135 ;
U.S. Cl.
CPC ...
H01J 6/135 ;
Abstract
An electric light bulb that minimizes peeling of the coating, suppresses reduction of the number of light fluxes, and is easy to manufacture is described. The electric light bulb has a glass bulb having a straight tube and a leading edge portion that is continuous with the straight tube. A blue coating is applied onto the straight tube, and a white or silver shield coating is applied onto the leading end portion