Learn more

WARD LEONARD ELECTRIC CO

Overview
  • Total Patents
    231
About

WARD LEONARD ELECTRIC CO has a total of 231 patent applications. Its first patent ever was published in 1896. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets electrical machinery and energy, machines and control are RELIANCE COMPANY, WHITTINGHAM GEORGE H and SPECTROL ELECTRONICS CORP.

Patent filings in countries

World map showing WARD LEONARD ELECTRIC COs patent filings in countries
# Country Total Patents
#1 United States 199
#2 Canada 15
#3 United Kingdom 13
#4 Switzerland 1
#5 Germany 1
#6 Denmark 1
#7 France 1

Patent filings per year

Chart showing WARD LEONARD ELECTRIC COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Logan Frank G 44
#2 Kouyoumjian Haroutiun K 14
#3 Ganci Charles J 13
#4 Leonard Kebler 13
#5 Bullinger Frederic H 11
#6 Scheib Jr John 11
#7 Robert Vradenburgh 9
#8 Bastian Arthur L 7
#9 Kouyoumjian Haroutium K 6
#10 Scheib John Jr 6

Latest patents

Publication Filing date Title
US3509509A Apparatus for providing a plurality of independent control signals
US3409851A Multipole electromagnetic contactor
US3419753A Solid state dimmer control circuit
US3299378A Electromagnetically actuated contactor having a linearly movable contact carrier
US3194920A Electrical contactor
US3248680A Resistor
US3248679A Metal alloy resistors
US3286327A Method of manufacturing electrical resistors
US3209299A Resistance metal alloy
US3218594A Electrical resistor
US3205467A Plastic encapsulated resistor
US3188416A Circuit breaker disconnector
US3114810A Mounting means for time delay contact member
US3188405A Multi-pole relay with interchangeable spring biased contact structure
US3106352A Translation apparatus
US3119087A Electrical resistor
US3145279A Enclosed multipole relay
US3206577A Multipole magnetic relays
US3193725A Control system for solid state controlled rectifiers
US3188406A Multiple plunger electrical switch for sequential contact operation and dynamic braking