Inventor · disambiguated record
Christoph Heckenkamp
Also filed as: HECKENKAMP CHRISTOPH
5 granted patents·371 citations·filing 1988–2001
87Inventor score
Top patents by PatentIndex Score
5 records- 0192US5801857AData carrier having an optically variable element and methods for producing itGAO AUTOMATION GMBH·Filed 1994·Granted Sep 1, 1998·128 cites·40 claims
- 0290US6337752B1Data carrier having an optically variable element and methods for producing itGAO GES AUTOMATION ORG·Filed 1998·Granted Jan 8, 2002·94 cites·12 claims
- 0389US4988126ADocument with an unforgeable surfaceGAO GES AUTOMATION ORG·Filed 1988·Granted Jan 29, 1991·58 cites·23 claims
- 0488US6954293B2Data carrier having an optically variable element and methods for producing itGAO GES AUTOMATION ORG·Filed 2001·Granted Oct 11, 2005·44 cites·45 claims
- 0584US5433807AMethod of producing a document with an unforgeable surface reliefGAO GES AUTOMATION ORG·Filed 1993·Granted Jul 18, 1995·47 cites·10 claims
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