Patent Inventor: Frank Kappe
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Security and/or value document
Inventor: Ahlers, et al. | Patent Number: 7488002
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Zinc sulfide electroluminophores and method for production thereof
Inventor: Kappe, et al. | Patent Number: 7252790
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Certified paper discriminating apparatus
Inventor: Matsui, et al. | Patent Number: 7248730
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Certified paper and an apparatus for discriminating the genuineness thereof
Inventor: Matsui, et al. | Patent Number: 7242796
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Zinc sulfide electroluminophores and method for production thereof
Inventor: Kappe, et al. | Patent Number: 7067071
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Product with a security element
Inventor: Kappe, et al. | Patent Number: 6827283
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Electric effect-based security feature on security documents and on documents of value-proof process belonging thereto
Inventor: Bailleu, et al. | Patent Number: 6659351
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Device for validating authenticity features on documents of value and security documents
Inventor: Kappe, et al. | Patent Number: 6600416
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Value or security product with luminescent security elements and method for the production and use thereof in respect to visual and machine-operated detection of authenticity
Inventor: Ahlers, et al. | Patent Number: 6530527
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Security document with optically excitable dyes for authenticity check
Inventor: Gutmann, et al. | Patent Number: 6234537