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DITCHFIELD FRANK

Overview
  • Total Patents
    24
About

DITCHFIELD FRANK has a total of 24 patent applications. Its first patent ever was published in 1905. It filed its patents most often in Canada and United States. Its main competitors in its focus markets transport and thermal processes are ALEPIN EVGENIJ ANDREEVICH, NOYON GUSTAVE and FERROSUD SPA.

Patent filings in countries

World map showing DITCHFIELD FRANKs patent filings in countries
# Country Total Patents
#1 Canada 14
#2 United States 10

Patent filings per year

Chart showing DITCHFIELD FRANKs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport
#2 Thermal processes

Focus technologies

# Technology
#1 Railway bodies
#2 Rail vehicle suspensions
#3 Furnaces

Top inventors

# Name Total Patents
#1 Ditchfield Frank 24
#2 Lindstrom Charles Augustus 1
#3 Atwood W S 1

Latest patents

Publication Filing date Title
CA189362A Wheel
US1182256A Furnace.
CA172055A Dump car
CA172056A Dump car mechanism
US1189353A Dump-car-operating mechanism.
US1189352A Dump-car.
CA162897A Furnace
CA162747A Truck for cars
CA157533A Car bolster
CA167532A Bolster
US1126729A Arch-bar truck.
US1123257A Bolster.
US1143615A Bolster.
US1041045A Car-door-operating mechanism.
CA133229A Railway car
CA135654A Car door mechanism
US1009957A Dump-car.
CA119340A Bolster for cars
US988983A Car-door-operating mechanism.
US890224A Dump-car.