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. 19, 2013
Filed:
Feb. 13, 2012
Applicants:
Myra T. Olm, Webster, NY (US);
Thomas D. Pawlik, Rochester, NY (US);
Erwin L. Allmann, Penfield, NY (US);
Inventors:
Myra T. Olm, Webster, NY (US);
Thomas D. Pawlik, Rochester, NY (US);
Erwin L. Allmann, Penfield, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/01 (2006.01); G01T 1/20 (2006.01); G01J 1/58 (2006.01);
U.S. Cl.
CPC ...
Abstract
A security marker material comprising emissive particles selected from at least two groups with different size distributions and the size distributions satisfy the formula:[()/()]>1wherein x and z are the volume-weighted mean equivalent-spherical diameters of the two particle distributions and Sand Sare the standard deviations of the same two distributions.