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BLACKSTONE & CO LTD

Overview
  • Total Patents
    129
About

BLACKSTONE & CO LTD has a total of 129 patent applications. Its first patent ever was published in 1932. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets engines, pumps and turbines, agriculture and environmental technology are ZHANG SHIGANG, NINGBO DAYE GARDEN EQUIPMENT COMPANY LTD and RENNOSUKE KONDO.

Patent filings in countries

World map showing BLACKSTONE & CO LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 63
#2 France 22
#3 Germany 14
#4 United States 12
#5 Canada 11
#6 Spain 4
#7 Switzerland 1
#8 Denmark 1
#9 Sweden 1

Patent filings per year

Chart showing BLACKSTONE & CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hallewell George 32
#2 Savage William Lawrence 18
#3 Ley Ralph Gilbert 6
#4 George Hallewell 6
#5 Cobb Gordon Edwin 5
#6 Gilbert Ley Ralph 3
#7 Lawrence Savage William 3
#8 Ratcliffe Edmund Bemrose 3
#9 Savage William L 2
#10 Bellamy Stanley Richard 2

Latest patents

Publication Filing date Title
DE1929865A1 Fertilizer or seed distributor
GB1276091A Apparatus for distributing fertiliser or other granular or powdered material
GB1097813A Improvements in or relating to the mounting of a camshaft in a cylinder block
GB1137887A Improvements in or relating to an internal combustion engine and a piston for such an engine
GB1091577A Improvements in or relating to torque responsive devices
GB1120931A Improvements in or relating to elevators
GB1146589A Improvements in or relating to a fuel injection internal combustion piston engine
GB1140342A Improvements in or relating to a manifold for a multi-cylinder internal combustion piston engine
GB1130573A Apparatus for broadcasting fertiliser or other granular or powdered material
ES299557A1 A device for connecting two alternate current feeds in parallel (Machine-translation by Google Translate, not legally binding)
ES299313A1 Improvements in devices to indicate or measure, motor couplings or rotary displacements (Machine-translation by Google Translate, not legally binding)
GB1062614A Power factor control of alternators
ES297754A1 A device to automatically correct an error in the operating characteristics of alternative swivel machines (Machine-translation by Google Translate, not legally binding)
GB1100511A Improvements in or relating to a liquid-cooled cylinder head for an internal combustion piston engine
GB1100512A Improvements in or relating to a cylinder head for an internal combustion piston engine
GB1028517A Improvements in or relating to an internal combustion engine and a piston for such an engine
GB1086562A Means for connecting alternating current supplies in parallel
US3143846A Agricultural apparatus including rotary tine-carrying members
US3173238A Hay tedders
GB1025784A Improvements in or relating to agricultural apparatus