Fortunato J Micale: Electrophoretic display particles and a process for their preparation. Koh I Noor Rapidograph, Fitzpatrick Cella Harper & Scinto, January 2, 1990: US04891245 (61 worldwide citation)

A process for producing particles for use in electrophoretic displays, wherein a heavy, solid pigment preferred for its high contrast or refractive index properties is coated with a polymer starting material. The process significantly reduces the specific density of the resultant particle, and creat ...