Inventors:
Hai Hui Lin - Mason OH, US
Philippe Schottland - West Chester OH, US
Russell J. Schwartz - Montgomery OH, US
Stephen Postle - Glen Rock NJ, US
William Sayers - Cincinnati OH, US
Caspar Lee - Somserset, GB
International Classification:
C09K 11/08
US Classification:
423263, 25230136, 2523014 R, 2523014 P, 2523014 S, 2523014 H, 2523014 F, 501 32, 423299, 106400, 977834, 977778, 977779, 428403, 428404, 2523016 R, 2523016 F, 2523016 P, 2523016 S, 428690, 106 3164, 250340, 2503417, 250362
Abstract:
Disclosed are methods for using color inconstancy pigments and/or dyes, such as rare earth doped color inconstancy pigments, in security applications including semi-overt and covert security application.