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:
Dec. 16, 2025
Filed:
Nov. 14, 2022
E Ink Corporation, Billerica, MA (US);
Ali Sarvi, San Jose, CA (US);
Abraham Berhane, Tracy, CA (US);
Mary E. Parent, Mountain View, CA (US);
Stephen J. Telfer, Arlington, MA (US);
E Ink Corporation, Billerica, MA (US);
Abstract
The present invention is directed to an aqueous sealing composition that comprises a combination of polymers, a poly(vinyl alcohol) homopolymer or poly(vinyl alcohol-co-ethylene) copolymer and a polyurethane, a conductive filler, and a water-soluble ether in an aqueous carrier. The aqueous sealing composition may be used to form a sealing film in electro-optic devices having an electro-optic material layer, comprising (a) a plurality of microcells filled with charged particles and a non-polar fluid and (b) a sealing film, wherein the electro-optic material layer is disposed between two electrode layers. The device exhibits good electro-optic performance.