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:
May. 22, 2007
Filed:
Dec. 29, 2003
Applicants:
Mitsuo Watanabe, Tokyo, JP;
Isao Iwaguchi, Tokyo, JP;
Hideo Miyazawa, Tokyo, JP;
Kozo Yamazaki, Tokyo, JP;
Masanori Ohkawa, Tokyo, JP;
Inventors:
Mitsuo Watanabe, Tokyo, JP;
Isao Iwaguchi, Tokyo, JP;
Hideo Miyazawa, Tokyo, JP;
Kozo Yamazaki, Tokyo, JP;
Masanori Ohkawa, Tokyo, JP;
Assignees:
Fujitsu Limited, Kawasaki, JP;
Fujitsu Frontech Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01R 19/00 (2006.01); G06F 11/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A time for replacement of a laser diode is decided based on a value of operating current of the laser diode and a value of intensity of laser light output from the laser diode.