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SEVCON ENG LTD

Overview
  • Total Patents
    81
About

SEVCON ENG LTD has a total of 81 patent applications. Its first patent ever was published in 1961. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets electrical machinery and energy, environmental technology and machines are FOSHAN ZHONGJIN MICRO ELECTRIC TECH CO LTD, C & S KOKUSAI KENKYUSHO KK and ENTZ JUSTUS B.

Patent filings in countries

World map showing SEVCON ENG LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 24
#2 France 16
#3 Germany 15
#4 United States 12
#5 Switzerland 7
#6 Sweden 5
#7 Canada 2

Patent filings per year

Chart showing SEVCON ENG LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gurwicz David 45
#2 David Gurwicz 7
#3 Gurwicz D 6
#4 Sloan Albert Everett 5
#5 Hambleton James 5
#6 Heyman Horace William 4
#7 David Gurwicz Isaac 3
#8 Sloan A 2
#9 Gurwitcz David 2
#10 Albert Everett Sloan 2

Latest patents

Publication Filing date Title
US3699416A Dynamic braking of wound motor polyphase induction motors
CA925565A Dynamic braking of wound motor polyphase induction motors
DE2059842A1 Circuit for the dynamic braking of a slip ring rotor motor
GB1357724A Apparatus for detecting the evolution of gas from the cell' of a lead-acid battery
US3629681A Circuits for controlled battery chargers
US3648151A Chopper circuit
GB1217879A Improvements in or relating to battery powered masted industrial trucks
GB1275911A Improvements in hydraulic pump drive assemblies
DE1763492A1 Static control device for carrying out repeated switching on and off of a load on a direct current source, whereby the load circuit and source are inductively loaded
GB1271497A Improvements in or relating to battery discharge indicators
GB1248053A Improvements in or relating to control circuits for switching d.c. electrical generators to d.c. electrical motors
GB1272401A Improvements in or relating to static switching controllers for effecting repetitive connection to and disconnection from an inductive load of a d.c. source
GB1263262A Improvements in commutation circuits
GB1263261A Improvements in electrically operated drive systems
GB1246088A Improvements in d.c. operated electrical devices
GB1234765A Improvements in electrical control systems
GB1242384A Improvements in or relating to regenerative braking of dc motors
GB1175155A Battery Vehicle Control System
GB1215296A Improvements in means for producing a variable voltage
GB1200895A Improvements in electrically operated drive systems