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:
Jul. 19, 2005
Filed:
May. 30, 2003
Applicants:
Toshiaki Mitobe, Shizuoka, JP;
Michihiro Mabe, Shizuoka, JP;
Koichi Nakamura, Shizuoka, JP;
Inventors:
Assignee:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V009/00 ; H01J005/16 ;
U.S. Cl.
CPC ...
Abstract
A vehicle lamp has a red bulb which is made by coating its exterior surface with a red paint including iron oxide as a red pigment. A mean particle size of the iron oxide is controlled to a range of approximately 10 to 100 nm, and a PWC concentration of the iron oxide is controlled to a range of approximately 60 to 90%. As a result, a red marker lamp can have an appropriate luminous flux (120±20% lm) and desirable chromaticity (y<0.335 and z<0.008) and satisfactory heat resistance (350° C. or higher).