If you did a quick search, for "Patent Office-worldwide, the result would be over 30 Million documents and a further search for "published Patent applications throughout the world under inventor Diethard Hansen", would show results detailing the various patents.

The major Patent Subject areas are NEMP, RFI, Tempest, EMI, EMC, Lightning Protection for conducted as well as radiated Interference/Disturbance Phenomena in Electronic Equipment /Systems and applicability to EM Emissions and Immunity effects. The highlights are:

	High Voltage fast Rise Time Pulse Generator for Gas Discharge Experiments in Physics (HMI Berlin Germany 1983).
	Nuclear Electromagnetic Pulse (NEMP) Test Equipments, Protection Methods as well as Electronic Circuits (BBC Baden CH 86). Applications in military as well as commercial fields.
	Various Electromagnetic Compatibility Measurement Apparati and Test Stands (GTEM® cell, asymmetrical DC-18 GHz, reduced test time by a factor of 10 for standards radiated emission tests-RE measurements over former conventional methods) as well as protection Methods with Electronic Circuits (ABB). The main focus here is on commercial/ industrial applications. The GTEM Test Cell was sold about 1000 times around the world under 4 (ABB Baden CH 1987) World Licenses. It triggered almost 100 scientific papers, including considerable Ph.D. theses work and habilitations at Universities till today. Recently the GTEM/EURO TEM cell was listed and accepted in an IEC 61000-4-20 international basic standard on test methods.
	New improved Test Cell Principles (EURO TEM®, symmetrical), Novel Electromagnetic Field Strength Sensors (Poyntor)® reading Vectors (e.g. true direction finding for EMI Noise sources) Application for Calibration, R&D and Equipment Testing e.g. CE-Marking in Industry and EMC Test Houses. Developed under EURO EMC SERVICE (EES Teltow D 1997) Dr. Hansen GmbH, Teltow -Berlin, Germany.