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GRESHAM & CRAVEN LTD

Overview
  • Total Patents
    87
About

GRESHAM & CRAVEN LTD has a total of 87 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets transport, engines, pumps and turbines and mechanical elements are HARRY EDWARD GRESHAM, INTERNAT AIR BRAKE COMPANY and PITTSBURGH AIR BRAKE COMPANY.

Patent filings in countries

World map showing GRESHAM & CRAVEN LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 41
#2 France 15
#3 Germany 9
#4 Spain 7
#5 Austria 6
#6 Belgium 3
#7 Ireland 3
#8 Denmark 1
#9 Finland 1
#10 United States 1

Patent filings per year

Chart showing GRESHAM & CRAVEN LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Marsh Gerald Cranton 24
#2 Cranton Marsh Gerald 4
#3 Gresham James Neville 3
#4 Hunter Ian Pearson 2
#5 Jackson G C 1
#6 Booth-Jones Thomas-Vernon 1
#7 Marsh Gerard Granton 1
#8 Williams Gordon 1
#9 Parton Clifford John 1
#10 Marsh Gerald Granton 1

Latest patents

Publication Filing date Title
GB1113502A Railway vacuum braking systems
GB1113503A Railway vacuum braking systems
GB1035376A Railway vehicle braking apparatus
GB1036349A Railway vehicle braking apparatus
GB996541A Railway vacuum brake equipment
GB981012A Fluid pressure control equipment
GB957931A Railway vacuum-brake cylinders
GB959717A Slack adjusters
GB940879A Improvements in accelerator valves for train braking systems
GB917390A Improvements relating to railway vehicle vacuum braking apparatus
GB947481A Improvements relating to a relief valve device in vacuum braking apparatus
GB899072A Improvements relating to railway vacuum braking apparatus
GB844489A Improvements relating to vacuum brake cylinders for railway vacuum braking systems
GB857246A Improvements in and relating to railway vehicles
GB849301A Improvements in relief valves for vacuum braking apparatus
GB834918A Improvements relating to vacuum operated braking apparatus
GB811799A Improvements in or relating to compressor or exhauster drives
GB790657A Improvements relating to vacuum brake apparatus for railway vehicles
GB773419A Improvements relating to vacuum brake apparatus for railway and like vehicles
GB736458A Improvements in the steam brake valves of steam railway locomotives