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HERFURTH GMBH

Overview
  • Total Patents
    53
About

HERFURTH GMBH has a total of 53 patent applications. Its first patent ever was published in 1955. It filed its patents most often in Germany, United States and EPO (European Patent Office). Its main competitors in its focus markets electrical machinery and energy, machines and measurement are ENRIETTI PIERO, GUENTHER HEISSKANALTECHNIK and SANRI KK.

Patent filings in countries

World map showing HERFURTH GMBHs patent filings in countries

Patent filings per year

Chart showing HERFURTH GMBHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Knobbe Karl-Heinz 10
#2 Herfurth Rolf 7
#3 Mahnau Heinrich 6
#4 Knobbe Karl Heinz 6
#5 Hutter Gerald 5
#6 Rische Uwe W 5
#7 Gerlach Rainer 4
#8 Noeldge Hellmut 4
#9 Zengel Horst 2
#10 Renning Gerhard 2

Latest patents

Publication Filing date Title
US5278382A Method for the high-frequency heating of dielectric workpieces
DE4034367A1 H.F. heating and joining workpieces - with controlled H.F. energy supply to electrodes
EP0374444A1 Gas discharge device having an oscillator
DE3928089A1 Electrically conductive workpiece inductive heating system - supplies AC to coil to produce field which produces strong current in short arcuated secondary
DE3843210A1 Oscillator for feeding a gas discharge line
DE3827414A1 Arrangement for treating and/or breaking down biological cell structures
DE3722323A1 Oscillator for supplying a gas-discharge path
CA1239488A Apparatus for checking persons for radioactive contamination
EP0222927A1 High-frequency amplifier
DE3539937A1 Device for monitoring persons for radiation contamination
DE3505527A1 DEVICE FOR CONTAMINATION MONITORING AGAINST RADIATION EMISSIONS OF PERSONS
DE3221081A1 Arrangement for reducing the counter gas consumption of large-area proportional counters
DE2947519A1 VIBRATION CIRCUIT
DE2854173A1 Plastic wetted filler moulding hardening - in press with high frequency application
DE2830088A1 Mfg. radial projections or flanges at ends of thermoplastics hoses - by simultaneously HF heating and compressing axially into mould cavity
DE2708903A1 Radiation proportional counter with large window - has several anode wires each connected to separate rate meter to minimise noise signal
DE2643517A1 Control loop for positioning drives in plastics heater units - uses control with exponential characteristic for accurate positioning in min. time
DE2639684B1 HF welding machine for large areas of thermoplastic - is modified to make the reactance between HF source and electrode always inductive
DE2635223A1 Ionising radiation measurement circuit - has counting tubes in probe connected by cable to remote control system which produces operating voltage from tubes
DE2627588A1 Dielectric production line heating machine for prepacked food - ensures that each prepacked food container on production line attains required accurately defined temp.