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. 25, 1980
Filed:
Nov. 28, 1977
Applicant:
Inventor:
John I Peterson, Falls Church, VA (US);
Assignee:
United States of America, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06P / ; C08K / ;
U.S. Cl.
CPC ...
8-4 ; 8DIG / ; 252408 ; 260 4221 ; 526303 ;
Abstract
The preparation of dye-containing compositions, in which the dye is copolymerized with an acrylic based monomer, is disclosed. A hydrophilic copolymer is formed in which the dye is present in a nondiffusible form. The dye-acrylic polymer composition can be produced in the form of microbeads by emulsion polymerization. In addition, light scattering particles may be added in the form of a material such as polystyrene microspheres.