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:
Oct. 28, 2025
Filed:
Oct. 14, 2021
Nitto Denko Corporation, Ibaraki, JP;
Yuji Toyota, Ibaraki, JP;
Masahiro Yaegashi, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki, JP;
Abstract
A whiteboard film () according to an embodiment of the present invention includes: a diffuse reflection layer () to diffuse-reflect visible light; an absorptive polarizing layer () having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer () being disposed between the diffuse reflection layer () and the absorptive polarizing layer () and having a second transmission axis that is substantially parallel to the first direction. A whiteboard () according to an embodiment of the present invention includes: a diffuse reflection plate () to diffuse-reflect visible light; an absorptive polarizing layer () having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer () being disposed between the diffuse reflection plate () and the absorptive polarizing layer () and having a second transmission axis that is substantially parallel to the first direction.