Learn more

BIRFIELD ENG LTD

Overview
  • Total Patents
    415
About

BIRFIELD ENG LTD has a total of 415 patent applications. Its first patent ever was published in 1956. It filed its patents most often in United Kingdom, France and Spain. Its main competitors in its focus markets mechanical elements, machines and textiles and paper are UNI CARDAN AG, UNIVERSAL PRODUCTS CO INC and LOUIS RICEFIELD.

Patent filings in countries

World map showing BIRFIELD ENG LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 107
#2 France 82
#3 Spain 57
#4 Canada 30
#5 United States 29
#6 Switzerland 28
#7 Austria 27
#8 Germany 24
#9 Belgium 21
#10 Sweden 6
#11 Denmark 3
#12 Netherlands 1

Patent filings per year

Chart showing BIRFIELD ENG LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cull William 44
#2 Callaghan Albert Edward 21
#3 William Cull 17
#4 Bastow Donald 16
#5 Hutchinson Philip 14
#6 Albert Edward Callaghan 9
#7 Bals Edward Julius 7
#8 Freeman Leslie Gaillard 7
#9 Rabson Edward John 7
#10 Macielinski Jerzy Witold 6

Latest patents

Publication Filing date Title
GB1203245A Improvements in or relating to locating means
GB1101780A Improvements in or relating to load-balancing hoists
GB1139354A Improvements in or relating to locating means
GB1156626A Improvements in or relating to Universal Joints
GB1150954A Improvements in or relating to Flexible Seals
GB1124475A Improvements in or relating to burnishing tools
GB1119618A Improvements in or relating to shields or guards
GB1185624A Improvements in or relating to Drive Shaft Assemblies
GB1128845A Improvements in or relating to the axial location of parts in bores
GB1069827A Improvements in or relating to runway trolleys for hoists
GB1126374A Improvements in or relating to securing machines
GB1120555A Improvements in or relating to shaft couplings
GB1112851A Improvements in or relating to universal joints
GB1161753A Improvements in or relating to Universal Joints
GB1126071A Improvements in or relating to vehicle steering shaft assemblies
ES321487A1 Improvements in or relative to pressure rollers. (Machine-translation by Google Translate, not legally binding)
GB1096329A Improvements in or relating to spraying equipment
ES316087A1 Improvements in universal meetings. (Machine-translation by Google Translate, not legally binding)
GB1066686A Improvements in or relating to electric lifting blocks
GB1145826A Improvements in or relating to tool heads