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FRIESEKE & HOEPFNER GMBH

Overview
  • Total Patents
    334
About

FRIESEKE & HOEPFNER GMBH has a total of 334 patent applications. Its first patent ever was published in 1941. It filed its patents most often in Germany, France and United Kingdom. Its main competitors in its focus markets measurement, optics and electrical machinery and energy are ANHUI BO NAIKE FRICTION MAT CO LTD, HOSEI BRAKE IND and NIPPON BRAKE KOGYO KK.

Patent filings in countries

World map showing FRIESEKE & HOEPFNER GMBHs patent filings in countries
# Country Total Patents
#1 Germany 252
#2 France 27
#3 United Kingdom 14
#4 Italy 10
#5 Switzerland 9
#6 United States 9
#7 Sweden 5
#8 Austria 3
#9 Netherlands 3
#10 Brazil 1
#11 India 1

Patent filings per year

Chart showing FRIESEKE & HOEPFNER GMBHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jotzoff Dr-Ing Angel 21
#2 Dittner Adam 13
#3 Koegel Karl 10
#4 Ballwieser Johann 10
#5 Bosch Dipl-Ing Julius 10
#6 Lehmann Kurt 8
#7 Kuschke Hartmut 7
#8 Grossner Rudolf 6
#9 Kuehnert Hans 6
#10 Jotzoff Dipl-Ing Dr-Ing Angel 6

Latest patents

Publication Filing date Title
DE3037434A1 Radioactive count open tube - has gas chamber backing porous wall which is fronted by anode and grid wired open count area
DE3037433A1 Radio activity contamination large area count tube - has separately measured anode electrode wire Groupings at specific spacings from cathode
DE3028370A1 Portable hydraulic rod cutter - has pincer action jaws with blades of specified wedge shape and stop preventing mutual blade contact
DE2946529A1 PRESSURE-CONTROLLED MULTI-CYLINDER PISTON PUMP
DE2918978A1 Radioactive dose rate meter simulation - by modulated high frequency transmission and reception
DE2913879A1 METHOD FOR REGULATING THE THICKNESS OF MOVING MEASURING RAILWAYS
DE2854927A1 Ionisation chamber dosimeter - with inner and outer capacitor electrodes insulated by beads
DE2851781A1 Radioactive sewage delay-tank system for activity control - esp. for use with water-conserving toilets in nuclear therapy wards
DE2850883A1 Hydraulic pump with constant swept volume - is driven by pulse width controlled variable speed DC motor to give constant output pressure
DE2841235A1 WC installation without siphon using electrical contact switches - which are under toilet seat and in water reservoir level sensor to actuate control unit to open valves to water and air pressure inlets
DE2835470A1 Alpha contamination of personnel monitoring - by determining ionisation of air flowing past person in monitoring cell
DE2750429A1 Radioactively contaminated sewage treated by concn. and decay - in two tanks operated alternately in optimised cycle
DE2745081A1 Evaluation of latent display of radio photoluminescent glasses - using light converter and reference light source so that measurement and calibration are carried out alternately
DE2745080A1 Evaluation appts. for radio-photoluminescence of glass - has luminescent and UV light branches and light converter detecting radiation dose
DE2744020A1 Radio photoluminescence lens analyser - has HV source variation compensation using UV measurement and comparison with reference signal
DE2737098A1 Capillary action filtration system - having band of hydrophobic material around roller with discharge point at lower level
DE2711885B1 Lifting device for a platform loaded with a ship
GB1525364A Control valve
DE2703516A1 Opener for portable dosimeter casing - comprises pair of tongs with split ring to close onto casing or lid
US4133511A Electro-hydraulic regulating valve system