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:
Aug. 13, 2002
Filed:
Feb. 24, 1998
Applicant:
Inventors:
Gregory Wayne Nelson, Kingsport, TN (US);
James John Krutak, Sr., Kingsport, TN (US);
Assignee:
Isotag Technology, Inc., Addison, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/164 ;
U.S. Cl.
CPC ...
G01N 2/164 ;
Abstract
A method for marking or tagging individual microparticles using a near infrared fluorophore for identification is provided. The near infrared fluorophore is included with one or more layers comprising the microparticle. Desirably, the coating layers contain colorants such as dyes and/or pigments which increases the total possible combinations that may be used to identify the marked material. There is further provided a method for marking a material using these microparticles containing a near infrared fluorophore.