Compositions – Light transmission modifying compositions
Reexamination Certificate
2005-11-22
2005-11-22
Tucker, Philip C. (Department: 1712)
Compositions
Light transmission modifying compositions
C252S584000, C356S071000, C501S014000, C501S015000, C501S017000, C501S018000, C501S019000, C428S403000, C428S406000, C428S916000, C106S403000, C106S419000, C106S420000, C106S425000, C106S432000, C106S436000, C106S451000, C106S452000, C106S453000, C106S456000, C106S461000, C106S479000, C106S480000
Reexamination Certificate
active
06966998
ABSTRACT:
A method of providing covert security features for documents such as vouchers, packaged goods and banknotes in which the document is provided with a dopant. The dopant consisting of a material which can be identified by examination of its response to visible wavelength photon radiation and which can be applied directly on or into the document or can be fused into glass matrices before application.
REFERENCES:
patent: 3951672 (1976-04-01), Langley et al.
patent: 4442170 (1984-04-01), Kaule et al.
patent: 5372387 (1994-12-01), Wajda
patent: 6048920 (2000-04-01), Ziolo et al.
patent: 6114077 (2000-09-01), Voets et al.
patent: 20 48 853 (1971-04-01), None
patent: 28 45 401 (1980-02-01), None
patent: 0 037 507 (1981-03-01), None
patent: 0 202 902 (1986-05-01), None
patent: 0 202 902 (1986-11-01), None
patent: 0 211 754 (1987-02-01), None
patent: 0 440 554 (1991-08-01), None
patent: 0 849 231 (1998-06-01), None
patent: 2 568 191 (1986-01-01), None
patent: 2 035 208 (1979-10-01), None
patent: WO 81 03509 (1984-04-01), None
patent: WO 94/16902 (1994-08-01), None
patent: WO 98/40224 (1998-09-01), None
Bank of England Printing Works, Purchase Order, Dated Apr. 21, 1997.
PCT International Preliminary Examination Report from PCT/GB99/03692, Dated Mar. 15, 2001.
PCT International Search Report from PCT/99/GB99/03692, Dated Feb. 8, 2000.
“Presentation To Task Force A”, The SpectraLesen Security System for Bank Notes, Quantum Glass Ltd., Jul. 15, 1997, pp. 1-17.
Purchase Order No. BOE 021759 00, The Bank of England Printing Works, Apr. 21, 1997, 1 page.
Control Development, Inc. letter, Dec. 5, 2001, 1 page.
Letter From Alan Fortune, Director to Bank of England Printing Works, Apr. 3, 1997, 1 page.
“Presentation to SEAGRAM PLC”, The SpectraLesen Security System for Commercial Product Authentication, Quantum Glass Ltd, Nov. 3, 1997, pp. 1-9.
Drinker Biddle & Reath LLP
Tucker Philip C.
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