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. 31, 2009
Filed:
May. 27, 2003
Applicants:
Shinya Takagi, Kanagawa, JP;
Akiko Iimura, Tochigi, JP;
Inventors:
Shinya Takagi, Kanagawa, JP;
Akiko Iimura, Tochigi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a dispersion for electrophoretic display, used in an electrophoretic display device having i) charged electrophoretic particles and ii) a dispersion medium in which the charged electrophoretic particles stand dispersed, the dispersion medium contains at least one of an ethylene acrylate copolymer and a styrene copolymer. The styrene copolymer is in a content of from 0.0001 part by weight to 3 parts by weight based on 100 parts by weight of the dispersion medium.