Inventor
DAUSMANN GUENTHER
DE16 patents
⚠️ This page may combine multiple inventors who share the name “DAUSMANN GUENTHER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GIESECKE & DEVRIENT GMBH
4 patentsUS7315407B2Jan 1, 2008
Security system, particularly for valuable documents
GIESECKE & DEVRIENT GMBH8 citations72
US7420720B2Sep 2, 2008
Optical element and method for the production thereof
GIESECKE & DEVRIENT GMBH3 citations61
US6876472B2Apr 5, 2005
Optical feature, in particular for documents of value, and a manufacturing method for the later individualization or data storage
GIESECKE & DEVRIENT GMBH2 citations61
US7149013B2Dec 12, 2006
Optical element and method for the production thereof
GIESECKE & DEVRIENT GMBH1 citations51
DAUSMANN GUENTHER
4 patentsUS8599458B2Dec 3, 2013
Method and apparatus for the production of volume transmission and/or reflection holograms
DAUSMANN GUENTHER6 citations71
US8059320B2Nov 15, 2011
Method for production of documents with a hologram and a document with a hologram
DAUSMANN GUENTHER4 citations60
US4730929AMar 15, 1988
Method and device for the contactless measurement of movement
DAUSMANN GUENTHER4 citations60
US9104176B2Aug 11, 2015
Method for the production of a multi-color volume hologram, a document with such a hologram, and a volume hologram master
DAUSMANN GUENTHER2 citations59
BUNDESDRUCKEREI GMBH
4 patentsUS5825514AOct 20, 1998
Master hologram for the production of copy-proof holograms
BUNDESDRUCKEREI GMBH5 citations71
US5896208AApr 20, 1999
Master hologram for the production of copy-proof holograms
BUNDESDRUCKEREI GMBH4 citations60
US6750465B2Jun 15, 2004
Device for evaluating diffractive authenticity features
BUNDESDRUCKEREI GMBH4 citations59
US5943144AAug 24, 1999
Process for the manufacture of non-replicable holograms possessing authenticity features and a reading device to check authenticity
BUNDESDRUCKEREI GMBH2 citations55