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SHAFER HOMER J

Overview
  • Total Patents
    43
About

SHAFER HOMER J has a total of 43 patent applications. Its first patent ever was published in 1937. It filed its patents most often in Canada, United States and Germany. Its main competitors in its focus markets mechanical elements, machines and engines, pumps and turbines are MAC VALVES INC, CONCORDIA FLUIDTECHNIK GMBH and SHAFER HOMER JOHN.

Patent filings in countries

World map showing SHAFER HOMER Js patent filings in countries
# Country Total Patents
#1 Canada 18
#2 United States 17
#3 Germany 5
#4 Italy 3

Patent filings per year

Chart showing SHAFER HOMER Js patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Shafer Homer J 35
#2 J Shafer Homer 5

Latest patents

Publication Filing date Title
US4235155A Delaying control for hydraulic motors
US4170169A Piston operator for imparting rotary motion
CA1062975A Piston operator for imparting rotary motion
CA994191A Dual cylinder operator for imparting rotary motion
CA965399A Trunnion type rotary valve of welded tube and plate construction
US4074692A Pipeline break shutoff control
CA940395A Piston operator for imparting rotary motion
US3269692A Ball valve construction
US3263312A Method of fabricating ball valves
US3323537A Rotary valve of welded tube and plate construction and method of making
US3304842A Non-hammer poppet valve control
US3223114A Automatic shut-off for pipeline
US3195857A Ball valve construction
US3155368A Ball valve seat construction
US3004552A Piston valve construction
US3004551A Sealing construction for piston valve
US2963262A Vented resilient ring sealing construction
US2728298A Vessel and fluid propelling device
US2611321A Vessel and fluid propelling device
US2262539A Pipe line system and mechanism therefor