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:
Mar. 01, 2022
Filed:
Feb. 05, 2021
Applicant:
Kent Displays, Inc., Kent, OH (US);
Inventors:
Assignee:
Kent Displays, Inc., Kent, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/137 (2006.01); G02F 1/1333 (2006.01); B43L 1/00 (2006.01); G02F 1/135 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13718 (2013.01); B43L 1/008 (2013.01); G02F 1/1351 (2021.01); G02F 1/13338 (2013.01); G02F 2202/022 (2013.01); G02F 2203/026 (2013.01);
Abstract
A magnet erased writing device or eWriter includes cholesteric liquid crystal material, in which a written image is erased using magnetically activated electronic circuitry. By eliminating the mechanical erase button of Prior Art eWriters, the eWriter can be designed with a display footprint that can cover nearly the entire face of the eWriter. An erasing magnet can be used with the device, which can be handheld as, for example, by being part of a stylus. With the erasing magnet separated from the device and the mechanical erase button being omitted, the eWriter avoids unintentional erasures, a drawback of Prior Art eWriters.