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ALCO VALVE CO

Overview
  • Total Patents
    97
About

ALCO VALVE CO has a total of 97 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets machines, thermal processes and mechanical elements are KULAIR CORP, ICELESS MACHINE COMPANY and REFRIGERATING SPECIALTIES CO.

Patent filings in countries

World map showing ALCO VALVE COs patent filings in countries
# Country Total Patents
#1 United States 84
#2 United Kingdom 7
#3 Canada 4
#4 Germany 1
#5 France 1

Patent filings per year

Chart showing ALCO VALVE COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Dube John E 20
#2 Tilney Ralph B 17
#3 Macdougall Franklin M 9
#4 Rose Howard E 9
#5 Schoen Roger W 6
#6 Wiegers Irvin E 5
#7 Houghton Lyle S 5
#8 Schenk John A 4
#9 Ives Clifford B 4
#10 Bower George D 4

Latest patents

Publication Filing date Title
US3444895A Three-way solenoid valve
US3299710A Temperature sensing system
GB974009A Liquid damped solenoid device
US3196630A Constant horsepower control valve
US3103795A Condenser pressure regulating system
GB965229A Temperature control system
US3159774A Oil damped solenoid valve
US3060699A Condenser pressure regulating system
US3111816A Thermostatic expansion valve with compound pressure regulating override
US3075388A Non-recycling thermostatic switch
US3023591A Rate of flow control system for refrigeration
US3037362A Compound pressure regulating system for refrigeration
US2986899A System for maintaining pressure in refrigeration systems
US2982303A Four-way reverse cycle valve
US3037525A Four-way changeover valve
US3006323A Hydraulic servo power valve with manually operable safety provisions
US2933107A Four-way reversing valve
US3045700A Piston slide valve
US3004557A Four-way change-over valve
US2982582A Slurry feed device