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DOXFORD ROBERT PILE

Overview
  • Total Patents
    58
About

DOXFORD ROBERT PILE has a total of 58 patent applications. Its first patent ever was published in 1914. It filed its patents most often in Spain, Austria and Denmark. Its main competitors in its focus markets engines, pumps and turbines are VERTZILE SHVAJTS AG, ALFA ROMEO SA and PETTER ERNEST WILLOUGHBY.

Patent filings in countries

World map showing DOXFORD ROBERT PILEs patent filings in countries
# Country Total Patents
#1 Spain 15
#2 Austria 12
#3 Denmark 11
#4 Switzerland 10
#5 Canada 6
#6 United Kingdom 4

Patent filings per year

Chart showing DOXFORD ROBERT PILEs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Engines, pumps and turbines

Top inventors

# Name Total Patents
#1 Doxford Robert Pile 33
#2 Keller Karl Otto 32
#3 Robert Pile Doxford 10
#4 Karl Otto Keller 10

Latest patents

Publication Filing date Title
GB127980A Improvements in or relating to Fuel-injection Valves for Oil-engines.
GB124534A Improvements in or relating to Pistons for Internal-combustion Engines.
GB113301A Improvements in Valve-gear for Internal-combustion Engines.
GB191419815A Improvements in or relating to Pistons.
CA227336A Liquid fuel engine
CA204621A Variable lift fuel valves for oil engines
CA213195A Fuel spraying nozzle for internal combustion engines
CA210026A Valve gear for internal combustion engines
CA211697A Internal combustion engine
CA239109A Compressed air inlet valve for internal combustion engines