Learn more

WINDFIELDS 1946 LTD

Overview
  • Total Patents
    22
About

WINDFIELDS 1946 LTD has a total of 22 patent applications. Its first patent ever was published in 1944. It filed its patents most often in United Kingdom, Canada and Germany. Its main competitors in its focus markets mechanical elements and control are ZAHNRADFABRIK AKT GES, SENSAUD DE LAVAUD DIMITRI and DOVNAR OLEG K.

Patent filings in countries

World map showing WINDFIELDS 1946 LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 7
#2 Canada 5
#3 Germany 4
#4 France 4
#5 United States 2

Patent filings per year

Chart showing WINDFIELDS 1946 LTDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Duffield William A 8
#2 Duffield William Alfred 3

Latest patents

Publication Filing date Title
DE1042395B Hydraulic-mechanical transmission, especially for motor vehicles
GB779530A Fluid drive transmission
GB759526A Variable-speed transmission
DE858188C Automatic speed change gearbox
GB673553A Improvements in or relating to variable speed transmissions
DE857892C Regulator, in particular for switching devices of motor vehicle transmissions
DE807875C Hydraulically controlled friction clutch
GB655487A Improvements in or relating to automatic variable speed transmissions
GB654452A Improvements in or relating to speed and torque sensitive governors
GB654453A Improvements in or relating to hydraulically operated clutches
US2587981A Speed and torque sensitive governor
GB639675A Automatic variable speed transmission
US2498797A Speed varying transmission
CA551420A Automatic variable speed transmission
CA523833A Hydraulically operated clutches
CA545269A Automatic variable speed transmission
CA492137A Speed and torque sensitive governors
CA501189A Automatic variable speed transmission