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HAYES ENGINEERS LEEDS LTD

Overview
  • Total Patents
    38
About

HAYES ENGINEERS LEEDS LTD has a total of 38 patent applications. Its first patent ever was published in 1954. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets machine tools, mechanical elements and machines are BANSTROM IND INC, ROCKFORD MACHINE TOOL CO and TRUE TRACE CORP.

Patent filings in countries

World map showing HAYES ENGINEERS LEEDS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 20
#2 France 6
#3 United States 6
#4 Switzerland 2
#5 Germany 2
#6 Canada 1
#7 Italy 1

Patent filings per year

Chart showing HAYES ENGINEERS LEEDS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hayes George 9
#2 Hayes Hubert George 8
#3 Woodruff Joseph Burton 4
#4 Woodruff Joseph B 2
#5 Clegg Brian M 2
#6 George Hayes Hubert 2
#7 Hubert George Hayes 1
#8 Brian Michael Clegg 1
#9 Hayes Hubert G 1
#10 Michael Clegg Brian 1

Latest patents

Publication Filing date Title
GB1163776A Improvements in or relating to the control of Machine Tools
GB1139808A Improvements in or relating to tracer valve control units
GB1038403A Improvements in or relating to rotary guide and slide assembly means
US3071418A Guide track means
GB898286A Improvements in or relating to rotary operating gear means
GB904431A Improved hydraulic tracer valve unit
GB911077A Improvements in or relating to guide track means
GB900321A Improvements in or relating to hydraulic tracer valve control systems
GB908183A Improvements in or relating to valves for hydraulic control systems
GB900142A Improvements in or relating to hydraulic tracer valve control systems
US3024808A Hydraulic copying or tracing valve units
GB832577A Improvements in or relating to hydraulic control valve units
US2969774A Servo-control mechanism operating means
GB829035A Improvements in or relating to copy machine tools
GB829218A Improvements in hydraulic tracing valve units
GB830929A Improvements in or relating to hydraulic control valve units
GB814399A Improvements in or relating to fluid pressure servo-control mechanisms
GB840801A Improvements in or relating to hydraulic tracer valve controlled systems
GB831466A Improvements in or relating to machine tools having knee balancing means
GB813171A Improvements in hydraulic tracing valve units