Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2005-06-07
2005-06-07
Le, H. Thi (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S032160, C428S323000, C428S328000, C106S031130, C106S031600, C106S031650, C106S031900
Reexamination Certificate
active
06902807
ABSTRACT:
Diffractive pigment flakes are selectively aligned to form an image. In one embodiment, flakes having a magnetic layer are shaped to facilitate alignment in a magnetic field. In another embodiment, the flakes include a magnetically discontinuous layer. In a particular embodiment, deposition of nickel on a diffraction grating pattern produces magnetic needles along the grating pattern that allow magnetic alignment of the resulting diffractive pigment flakes. Color scans of test samples of magnetically aligned flakes show high differentiation between illumination parallel and perpendicular to the direction of alignment of the magnetic diffractive pigment flakes.
REFERENCES:
patent: 3610721 (1971-10-01), Abramson et al.
patent: 3676273 (1972-07-01), Graves
patent: 3790407 (1974-02-01), Merten et al.
patent: 3791864 (1974-02-01), Steingroever
patent: 3853676 (1974-12-01), Graves
patent: 4011009 (1977-03-01), Lama et al.
patent: 4398798 (1983-08-01), Krawczak et al.
patent: 5079085 (1992-01-01), Hashimoto et al.
patent: 5192611 (1993-03-01), Tomiyama et al.
patent: 5364689 (1994-11-01), Kashiwagi et al.
patent: 5368898 (1994-11-01), Akedo
patent: 5424119 (1995-06-01), Phillips et al.
patent: 5613022 (1997-03-01), Odhner et al.
patent: 5624076 (1997-04-01), Miekka et al.
patent: 5627663 (1997-05-01), Horan et al.
patent: 5630877 (1997-05-01), Kashiwagi et al.
patent: 5672410 (1997-09-01), Miekka et al.
patent: 5991078 (1999-11-01), Yoshitake et al.
patent: 6033782 (2000-03-01), Hubbard et al.
patent: 6043936 (2000-03-01), Large
patent: 6103361 (2000-08-01), Batzar et al.
patent: 6168100 (2001-01-01), Kato et al.
patent: 6692830 (2004-02-01), Argoitia et al.
patent: 0341002 (1989-11-01), None
patent: 0556449 (1993-08-01), None
patent: 406667 (1995-01-01), None
patent: 710508 (1996-05-01), None
patent: 0953937 (1999-11-01), None
patent: 1239307 (2002-09-01), None
patent: 63172279 (1988-07-01), None
patent: WO 02/40600 (2002-05-01), None
Llewellyn, “Dovids: Functional Beauty—discussion about holography”, Paper, Film, and Foil Converter, Aug. 2002.
Hardin, “Optical tricks designed to foil counterfeiters”, OE Reports, No. 191, Nov. 1999.
U.S. Appl. No. 10/117,307, filed Apr. 05, 2002, Argoitia et al.
U.S. Appl. No. 10/029,405, filed Dec. 20, 2001, Argoitia et al.
U.S. Appl. No. 09/919,346, filed Jul. 31, 2001, Argoitia et al.
U.S. Appl. No. 09/850,421, filed May 07, 2001, Phillips et al.
Argoitia and Witzman,Pigments Exhibiting Diffractive Effects,Soc. of Vac. Coaters, 45thAnnual Tech. Conf. Proceed. (2002).
Powell et al. (ED.),Vapor Deposition,John Wiley & Sons, p. 132 (1996).
Van Renesse (Ed.),Optical Document Security,2ndEd., Artech House 254, 349-69 (1997).
Dobrowolski et al.,Research on Thin Film Anticounterfeiting Coatings at the National Research Council of Canada,Applied Optics, vol. 28, No. 14, pp. 2702-17 (Jul. 15, 1989).
Lotz et al.,Optical Layers on Large Area Plastic Films,Precision, Applied Films (Nov. 2001).
Himpsel et al.,Nanowires by Step Decoration,Mat. Research Soc. Bul., pp. 20-24 (Aug. 1999).
Prokes and Wang (ED.),Novel Methods of Nanoscale Wire Formation,Mat. Research Soc. Bul., pp. 13-14 (Aug. 1999).
Argoitia Alberto
Chu Dishuan
Raksha Vladimir P.
Allen, Dyer, Doffelt, Milbrath & Gilchrist, P.A.
Flex Products, Inc.
Le H. Thi
LandOfFree
Alignable diffractive pigment flakes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alignable diffractive pigment flakes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alignable diffractive pigment flakes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3496302