Inventor

PRADEL HELMUT

DE4 patents

⚠️ This page may combine multiple inventors who share the name “PRADEL HELMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GIESECKE & DEVRIENT GMBH

2 patents

US7469589B2Dec 30, 2008

Method and device for determining the limpness of sheet material by means of ultra-sound

GIESECKE & DEVRIENT GMBH7 citations68

US9910122B2Mar 6, 2018

Calibration of a magnetic sensor

GIESECKE & DEVRIENT GMBH0 citations38

PRADEL HELMUT

1 patent

US8304713B2Nov 6, 2012

Device and method for calibrating a sensor system

PRADEL HELMUT28 citations83

GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH

1 patent

US11043057B2Jun 22, 2021

Magnetic testing of valuable documents

GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations38