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US Patent 7924412 Apparatus and method for characterizing electrophoretic display mediums

Patent 7924412 was granted and assigned to Xerox on April, 2011 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Current Assignee
Xerox
Xerox
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7924412
Patent Inventor Names
Gaetano J. Lavigne1
Peter M. Kazmaier1
Naveen Chopra1
Man-Chung Tam1
Date of Patent
April 12, 2011
Patent Application Number
11461188
Date Filed
July 31, 2006
Patent Primary Examiner
‌
Tarifur Chowdhury
Patent abstract

A method and an apparatus for measuring reflectivity, charge and/or particle mobility of electrophoretic display mediums and particles are described. The apparatus for evaluating characteristics of an electrophoretic display medium, comprising a cell for containing the electrophoretic display medium, located between conductive substrates, a voltage application unit associated with the cell, an electrometer to measure transient current, and a densitometer to measure reflectance.

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