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HULL FRANCIS R

Overview
  • Total Patents
    30
About

HULL FRANCIS R has a total of 30 patent applications. Its first patent ever was published in 1948. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets transport, machines and environmental technology are ULSTEIN PROPELLER, HULL F and NORGES SKIPSFORSKNINGS INST.

Patent filings in countries

World map showing HULL FRANCIS Rs patent filings in countries

Patent filings per year

Chart showing HULL FRANCIS Rs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hull Francis R 29
#2 Hull F R 1

Latest patents

Publication Filing date Title
US5261359A Reciprocating 2-stroke cycle internal combustion engine
US5056593A Dehumidifying heat exchanger apparatus
US4926771A Variable hull resistance system for marine vessels
US4590847A Supply make-up air attachment for exhaust booths
US4548262A Condensing gas-to-gas heat exchanger
US4183331A Forced circulation steam generator
CA1047336A High-capacity steam heating system
US3934799A High-capacity steam heating system
US3939794A Marine pump-jet propulsion system
CA960100A Regenerative rankine cycle power plant
US3686867A Regenerative ranking cycle power plant
US3915222A Compressible fluid contact heat exchanger
US3621654A Regenerative gas turbine power plant
US3620183A Marine jet propulsion system
US2905964A Caster structure
US2855209A Retractible carriage mounting
US2814498A Retractible carriage mounting
US2768835A Retractible carriage mounting
US2850288A Retractible carriage mounting
US2515450A Shower and bath mat