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. 27, 2008
Filed:
Jan. 26, 2006
Applicants:
Hisashi Tahara, Hiratsuka, JP;
Akimasa Kaneishi, Hiratsuka, JP;
Inventors:
Hisashi Tahara, Hiratsuka, JP;
Akimasa Kaneishi, Hiratsuka, JP;
Assignee:
Mitsubishi Engineering-Plastics Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D 7/00 (2006.01); B29C 33/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light guide plate which is made of a transparent resin and has a first main surface and a second main surface opposite to said first main surface, said first main surface having a surface portion provided with convex portions having a height of 5×10m to 6×10m each and a pitch of 5×10m to 4×10m, each convex portion having a tip portion, and the convex portions of at least 80% of the total convex portions having the tip portions having a radius of curvature of 2×10m or less.