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. 11, 2025
Filed:
Jan. 17, 2023
E Ink Corporation, Billerica, MA (US);
Kosta Ladavac, Somerville, MA (US);
Richard J. Paolini, Jr., Framingham, MA (US);
Stephen J. Telfer, Arlington, MA (US);
Lee Yezek, Watertown, MA (US);
Sunil Krishna Sainis, Melrose, MA (US);
Peter Carsten Bailey Widger, Nashua, NH (US);
E Ink Corporation, Billerica, MA (US);
Abstract
A variable light transmission device has at least one layer of electrophoretic medium comprising charged particles. Application of a an electric field having a waveform formed by a superposition of a carrier and a modulator waveform enables the switching of the device from a closed state to an open state, wherein the open state has higher light transmission than the closed state. As a result, the device enables the selection of the desired optical state by the user.