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:
Aug. 19, 2025
Filed:
May. 27, 2022
Applicant:
Keiwa Incorporated, Tokyo, JP;
Inventors:
Assignee:
KEIWA INCORPORATED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133606 (2013.01); G02F 1/133603 (2013.01); G02B 5/0215 (2013.01); G02B 5/0231 (2013.01); G02B 5/0278 (2013.01);
Abstract
One aspect of the present invention is a light diffusion sheet having a first surface on which a plurality of recesses that diffuse light are formed, and a second surface on which a plurality of projections that can transmit light are provided apart from each other.