(19)
(11)
EP 1 252 602 A1
(12)
(43)
Date of publication:
30.10.2002
Bulletin 2002/44
(21)
Application number:
00991733.7
(22)
Date of filing:
09.11.2000
(51)
International Patent Classification (IPC)
7
:
G06K
9/00
,
B05D
5/00
,
G03C
3/00
(86)
International application number:
PCT/US0042/065
(87)
International publication number:
WO 0103/7207
(
25.05.2001
Gazette 2001/21)
(84)
Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI
(30)
Priority:
09.11.1999
US 164387 P
08.11.2000
US 708273
(71)
Applicant:
Spectra Science Corporation
Providence, RI 02903 (US)
(72)
Inventor:
LAWANDY, Nabil, M.
North Kingstown, RI 02852 (US)
(74)
Representative:
Read, Matthew Charles et al
Venner Shipley & Co.20 Little Britain
London EC1A 7DH
London EC1A 7DH (GB)
(54)
AUTHENTICATION AND CODING BY SIZE, SHAPE, AND FLUORESCENCE