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CHARLES FREDERIC HEYWOOD

Overview
  • Total Patents
    29
About

CHARLES FREDERIC HEYWOOD has a total of 29 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets engines, pumps and turbines, mechanical elements and audio-visual technology are FLOTRONICS AG, SOUTHWARK FOUNDRY AND MACHINE and SILVA E.

Patent filings in countries

World map showing CHARLES FREDERIC HEYWOODs patent filings in countries
# Country Total Patents
#1 United Kingdom 26
#2 Germany 2
#3 France 1

Patent filings per year

Chart showing CHARLES FREDERIC HEYWOODs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Heywood Charles Frederic 1

Latest patents

Publication Filing date Title
GB549559A Improvements in and relating to relief valves for compressed air apparatus
GB540947A An improved check or transfer valve
GB531635A Improvements in or relating to automatic regulating valves for compressors and the like
GB531961A An improved automatic regulating system for adapting and controlling a compressor for use also as a vacuum pump or exhauster
GB530993A Improvements in or relating to air compressors
GB513392A Device for facilitating the starting of an internal combustion engine by means of compressed air
GB520703A Improvements in air or gas compressors
GB516655A Improvements in or relating to the starting of compression ignition engines or diesel engines
GB505366A Device for the starting of multi-cylinder internal combustion engines
GB461549A Apparatus for starting internal combustion multi-cylinder engines by means of a compressible fluid under pressure
GB479851A Improvements in or relating to the starting of internal combustion engines
GB420102A Improvements in or relating to starting means for internal combustion engines
GB417180A Improvements in or relating to means for starting internal combustion engines
GB411555A Improvements in or relating to valves, particularly for fluids at high pressure
GB389693A Improvements in or relating to the starting of diesel engines
GB370488A Improvements in or connected with the starting of internal combustion engines
GB332541A Improvements in or relating to the automatic control of fluid pressure systems
GB329654A Improvements in safety valves of compressed air systems
GB329653A An improved safety valve for air pressure systems
GB329310A Improvements in or relating to the starting and running of internal combustion engines