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. 02, 2025
Filed:
Apr. 06, 2023
Applicant:
E Ink Corporation, Billerica, MA (US);
Inventors:
Yuriy Borisovich Matus, Pleasanton, CA (US);
Chandra Bikram Kc, San Jose, CA (US);
Saemi Oh Poelma, Sunnyvale, CA (US);
Haiyan Gu, Fremont, CA (US);
Donald A. Schultz, San Jose, CA (US);
Abraham Berhane, Tracy, CA (US);
Assignee:
E INK CORPORATION, Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/16766 (2019.01); B42D 25/21 (2014.01); B42D 25/36 (2014.01); G02F 1/1333 (2006.01); G02F 1/167 (2019.01); G02F 1/1679 (2019.01);
U.S. Cl.
CPC ...
G02F 1/1679 (2019.01); B42D 25/21 (2014.10); B42D 25/36 (2014.10); G02F 1/133394 (2021.01); G02F 1/167 (2013.01); G02F 1/16766 (2019.01);
Abstract
The present invention is directed to a sealing layer that comprises a combination of polyurethane and poly(vinyl alcohol), the poly(vinyl alcohol) containing an acetoacetate functional group in its molecular structure. The sealing layer is formed from an aqueous sealing composition and shows water resistance and good barrier properties to non-polar fluids. The sealing layer can be used to seal microcells of electro-optic displays.