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:
Apr. 20, 2004
Filed:
Jun. 23, 2000
Applicant:
Inventors:
Masaaki Muto, Yokohama, JP;
Shigeru Shibayama, Yokohama, JP;
Hiroharu Shimada, Tokyo, JP;
Isamu Sato, Tokyo, JP;
Shinya Omori, Yokohama, JP;
Yasuhisa Yaguchi, Yokohama, JP;
Naoyuki Matsubara, Yokohama, JP;
Yoshifumi Takao, Yokohama, JP;
Toshiyuki Nagahara, Yokohama, JP;
Assignee:
Stanley Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 6/100 ;
U.S. Cl.
CPC ...
H01J 6/100 ;
Abstract
The invention provides an arc tube with improved chromaticity and start-up characteristics that does not contain mercury, and provides a vehicle headlamp equipped with a metal halide lamp that contains no mercury in the arc tube. Among other improvements, the evaporation of low melting point metal halides is promoted and the start-up characteristics of the arc tube are improved.