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CALIFORNIA VALVE AND AIR BRAKE COMPANY

Overview
  • Total Patents
    30
About

CALIFORNIA VALVE AND AIR BRAKE COMPANY has a total of 30 patent applications. Its first patent ever was published in 1908. It filed its patents most often in United States and France. Its main competitors in its focus markets transport, mechanical elements and machines are GRAHAM JOHN M, CALEB SMITH BRAGG and PENDRY WILLIAM A.

Patent filings in countries

World map showing CALIFORNIA VALVE AND AIR BRAKE COMPANYs patent filings in countries
# Country Total Patents
#1 United States 27
#2 France 3

Patent filings per year

Chart showing CALIFORNIA VALVE AND AIR BRAKE COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Neal Spencer G 25
#2 Childress Joseph M 3
#3 Pierce Guy Carleton 2
#4 Sheasby William H 1

Latest patents

Publication Filing date Title
US1183103A Air-brake apparatus.
US1157954A Air-retaining valve for air-brake apparatus.
US1162383A Feed-valve for air-brake apparatus.
US1128622A Quick-action release mechanism for air-brakes.
US1125871A Triple valve for air-brakes.
US1089578A Compensating valve.
US1089576A Compensating valve.
US1089575A Auxiliary-pressure-control valve.
US1091754A Auxiliary-pressure-control valve.
US1089577A Compensating valve.
US1089579A Compensating valve.
US1091763A Method and means for forming diaphragms.
US1089574A Compensating valve.
US1082758A Triple valve for air-brakes.
US1062300A Means for forming and supporting diaphragms.
US1078303A Triple valve for air-brakes.
US1012695A Triple valve for air-brakes.
US1012694A Triple valve for air-brakes.
US1012693A Distributing-valve for air-brakes.
US970736A Pressure-regulating apparatus.