Black and white electrophoretic particles and method of manufacture Grant US-6117368-A United States of America 12 Sep 2000
Polymer particles and process for producing the same Grant US-5472818-A United States of America 05 Dec 1995
Polymer particles and method for producing the same Grant US-5382624-A United States of America 17 Jan 1995
PROCESS FOR THE PREPARATION OF CROSS-LINKED POLYMER PARTICLES Grant US-5216096-A United States of America 01 Jun 1993