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. 12, 1996
Filed:
May. 11, 1994
Applicant:
Inventors:
Wei-Hsin Hou, Bethlehem, PA (US);
Thomas B Lloyd, Bethlehem, PA (US);
Frederic E Schubert, Shoreham, NY (US);
Assignee:
Copytele, Inc., Huntington Station, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525369 ; 525366 ; 525379 ; 525384 ; 5253315 ; 5253308 ; 526201 ; 526212 ; 526200 ; 526217 ; 526208 ; 526209 ; 526213 ; 526 77 ; 526344 ; 526296 ; 526255 ; 526250 ; 5785 / ; 5785 / ; 526344 ; 526296 ; 526255 ; 526250 ;
Abstract
A process for forming dielectric particles includes admixing a vinyl halide monomer and a crosslinker in a liquid dispersion medium to form a first mixture. A second mixture of an initiator and a stabilizer is prepared and added to the first mixture to form a third mixture in which the monomer polymerizes to form white crystalline polymer particles which are sonified for uniformity. The particles may be stained by exposure to a dehydrohalegenation reagent and dispersed in an electrophoretic fluid for use in an electrophoretic display.