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HOFFMANN & CO ELEKTROKOHLE AG

Overview
  • Total Patents
    56
  • GoodIP Patent Rank
    204,991
About

HOFFMANN & CO ELEKTROKOHLE AG has a total of 56 patent applications. Its first patent ever was published in 1989. It filed its patents most often in Germany, WIPO (World Intellectual Property Organization) and China. Its main competitors in its focus markets electrical machinery and energy, transport and materials and metallurgy are CARBONE LORRAINE APPLICATIONS ELECTRIQUES, SCHUNK CARBON TECHNOLOGY GMBH and MERSEN FRANCE AMIENS SAS.

Patent filings per year

Chart showing HOFFMANN & CO ELEKTROKOHLE AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Reiser Klaus 15
#2 Rastl Hans 12
#3 Grabner Herbert 7
#4 Reynvaan Conrad 6
#5 Bachauer Gerhard 6
#6 Weber Markus 6
#7 Kain Gottfried 6
#8 Ganzel Martin 3
#9 Angerer Johann 3
#10 Wallmann Herbert 3

Latest patents

Publication Filing date Title
DE102014222267A1 Power transmission system
DE102014008404A1 Azimuth braking device for wind turbines
DE102012224254A1 Gleitkontaktvorrichtung
DE102012220583A1 Process for the production of a carbon component and carbon abrasive piece
DE102011012457A1 Brush assembly for an electric fuel pump for conveying electrically conductive fuels
BR112012013273A2 Method for establishing a sealed connection
DE102010042027A1 Slip piece for a sliding contact device
DE102010041867A1 Power transmission arrangement for electromechanical machines and installations
DE102010039098A1 Brush unit manufacturing method, involves welding stranded wires of strand end with one another, before connection of strand end with connection, and welding strand end by fusion welding method and beam welding method
DE102010003874A1 Sanding strip for a sliding contact device and method for producing a sanding strip
DE102009047757A1 Sensor element for a sensor device
DE102008004979A1 Quality controlling method for welded joint in wire conductor connection, involves pressing end against surface such that opening is filled by line and determining quality of connection by comparison of filling degree of opening with value
AU2007242948A1 Carbon brush with connecting cable
DE102007059555A1 Brush assembly for an electric machine, spring and seal assembly for the same, and method of making the same
BRPI0704647A2 carbon brush with connecting cable
DE102006044816A1 Friction lining for brakes and clutches, comprises support plate made of steel and friction lining element, which is made of powdery friction material by powder metallurgical pressing and sintering
DE102005054686B3 Carbon brush with connecting cable e.g. for electric motor of fuel pump, has stripped section of cable sufficiently long for insulating wall of cable to lie in blind hole
DE102004026540A1 Process for producing lamellae of a flat commutator
DE10359896A1 Carbon brush and method and material for their production
DE10054537A1 Brush arrangement for electric motors