Global Patent Index - EP 0975838 A1

EP 0975838 A1 2000-02-02 - DOCUMENT HAVING A VALUE

Title (en)

DOCUMENT HAVING A VALUE

Title (de)

WERTDOKUMENT

Title (fr)

DOCUMENT DE VALEUR

Publication

EP 0975838 A1 (DE)

Application

EP 99932413 A

Priority

  • DE 19804024 A
  • EP 9900592 W

Abstract (en)

[origin: DE19804024A1] The invention relates to a printed document having a value and comprising at least one authenticity feature in the form of a luminescent substance on the basis of a host lattice doped with at least two rare-earth metals. The host lattice absorbs essentially in the visible spectrum, can be excited in substantial parts of the visible spectrum and is transparent at least in partial areas of the infrared spectrum. The luminescent substance is present in the volume of the document having a value at a concentration which is such that the properties of said document are not affected. Thulium and holmium are used as the rare-earth metals.

IPC 1-7 (main, further and additional classification)

D21H 21/48; B42D 15/00; G06K 19/14

IPC 8 full level (invention and additional information)

B41M 3/14 (2006.01); B42D 15/00 (2006.01); B42D 25/29 (2014.01); D21H 21/48 (2006.01); G01J 1/58 (2006.01)

CPC (invention and additional information)

C09K 11/7776 (2013.01); B41M 3/144 (2013.01); B42D 25/29 (2014.10); C09K 11/7774 (2013.01); D21H 21/48 (2013.01); Y10S 283/901 (2013.01); Y10S 283/904 (2013.01); Y10T 428/22 (2013.01); Y10T 428/24802 (2013.01)

Citation (search report)

See references of WO 9939051A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19804024 A1 19990805; AU 3251899 A 19990816; BR 9904815 A 20000523; BR 9904815 B1 20081118; CN 1138893 C 20040218; CN 1255950 A 20000607; EP 0975838 A1 20000202; HK 1027138 A1 20040903; NO 994739 A 19990929; NO 994739 D0 19990929; RU 2203188 C2 20030427; US 6479133 B1 20021112; WO 9939051 A1 19990805

INPADOC legal status


2008-03-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20080208

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000207

2000-02-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-02-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: SI PAYMENT 19991102