Marking material with birefringent nanoparticles

Details Marking material with birefringent nanoparticles Marking material with birefringent nanoparticles

2011-03-01

2011-03-01

RoDee, Christopher (Department: 1721)

Radiation imagery chemistry: process, composition, or product th

Imaged product

Antifraud or antitampering

C283S904000, C382S321000, C380S054000, C430S108600, C430S108100, C430S115000, C523S153000, C523S160000

Reexamination Certificate

active

07897307

ABSTRACT:
Disclosed is a birefringent marking material comprising a vehicle for the marking material and birefringent nanoparticles having an average particle size of less than about 700 nm. The birefringent marking material, such as an ink or a toner, can be used to provide a security marking on or in an item, thereby enabling authentication of the item containing the image formed using the birefringent marking material.

REFERENCES:
patent: 5807625 (1998-09-01), Amon et al.
patent: 6114077 (2000-09-01), Voets et al.
patent: 2003/0186148 (2003-10-01), Nakamura et al.
patent: 2003/0186151 (2003-10-01), Nakayama et al.
patent: 2004/0024091 (2004-02-01), Yamada et al.
patent: 2004/0220298 (2004-11-01), Kozee et al.
patent: 2004/0233465 (2004-11-01), Coyle et al.
patent: 2006/0189712 (2006-08-01), Kondo
patent: 0280378 (1988-02-01), None
Diamond, “Handbook of Imaging Materials,” Marcel Dekker, NY, NY 1991. p. 527-529.
Kohji Yoshinaga, Ch. 12.1, Surface Modification of Inorganic Particles, in Surfactant Science Series published 2000 by CRC Press, p. 626-627. Obtained from Google Books website: http://books.google.com/books?id=lurWPtFnTRsC&pg=PA626&lpg=PA626&dq=Surface+Modification+of+Inorganic+particles+Yoshinaga&source=bl&ots=m-Odxsr6DX&sig=XEolzoh9DUeb0ZyQwaQ.

Affiliated with

Also associated with

Rating

Marking material with birefringent nanoparticles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Marking material with birefringent nanoparticles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Marking material with birefringent nanoparticles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2772332