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. 24, 2002
Filed:
Jun. 29, 2001
Applicant:
Inventor:
Yoshifumi Natsuyama, Yamato, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1335 ; G02F 1/1333 ;
U.S. Cl.
CPC ...
G02F 1/1335 ; G02F 1/1333 ;
Abstract
A panel light source device includes a light source, a light guide plate for guiding and diffusing light from the light source, and a frame for housing the light guide plate. The frame has a convexity inside thereof and the light guide plate has a concavity on a side or lower surface thereof. The convexity and the concavity are engaged with each other, and the light guide plate is provided in the frame so as to cover at least a part of an upper surface of the light guide plate.
Quick Actions:
Natsuyama, Yoshifumi. (2002). Panel light source device (U.S. Patent No. 6498631). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6498631
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile