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:
May. 12, 2009
Filed:
May. 02, 2007
Thomas H. Whitesides, Somerville, MA (US);
Qingye Zhou, Acton, MA (US);
Robert W. Zehner, Cambridge, MA (US);
Karl R. Amundson, Cambridge, MA (US);
Suzanne Balko, Davis, CA (US);
Alberto Goenaga, Goleta, CA (US);
Peter Valianatos, Charlestown, MA (US);
Charles Howie Honeyman, Roslindale, MA (US);
Elizabeth M. Gates, Somerville, MA (US);
Matthew A. King, Marina del Rey, CA (US);
Russell J. Wilcox, Natick, MA (US);
Thomas H. Whitesides, Somerville, MA (US);
Qingye Zhou, Acton, MA (US);
Robert W. Zehner, Cambridge, MA (US);
Karl R. Amundson, Cambridge, MA (US);
Suzanne Balko, Davis, CA (US);
Alberto Goenaga, Goleta, CA (US);
Peter Valianatos, Charlestown, MA (US);
Charles Howie Honeyman, Roslindale, MA (US);
Elizabeth M. Gates, Somerville, MA (US);
Matthew A. King, Marina del Rey, CA (US);
Russell J. Wilcox, Natick, MA (US);
E Ink Corporation, Cambridge, MA (US);
Abstract
A first electrophoretic medium comprises an electrically charged particle suspended in a suspending fluid, the particle having a polymeric shell having repeating units derived from at least one monomer the homopolymer of which is incompatible with the suspending fluid. A second, similar electrophoretic medium comprises a suspending fluid, and first and second types of electrically charged particle suspended in the suspending fluid, the two types of particle having differing optical characteristics but both having polymeric shells. The polymeric shells are arranged such that homoaggregation of the two types of particles is thermodynamically favored over heteroaggregation.