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:
Jan. 02, 1990
Filed:
Mar. 21, 1986
Applicant:
Inventor:
Fortunato J Micale, Bethlehem, PA (US);
Assignee:
Koh-I-Noor Rapidograph, Inc., Bloomsbury, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; H01B / ;
U.S. Cl.
CPC ...
4272133 ; 427216 ; 427221 ; 42840224 ; 252520 ;
Abstract
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 creates particles with smooth polymer surfaces that can be chosen for stability in a given electrophoretic carrier fluid, and possess acceptable electrophoretic characteristics.