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DOWTY HYDRAULIC UNITS LTD

Overview
  • Total Patents
    508
About

DOWTY HYDRAULIC UNITS LTD has a total of 508 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets mechanical elements, engines, pumps and turbines and transport are KAEMPER MOTOREN G M B H, AXEL WICKMAN TRANSMISSIONS LTD and GRANBOM BO.

Patent filings in countries

World map showing DOWTY HYDRAULIC UNITS LTDs patent filings in countries

Patent filings per year

Chart showing DOWTY HYDRAULIC UNITS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Thoma Oswald 69
#2 Bick David Ewart 33
#3 Kempson Bertram Carl 30
#4 Bowers Eric Hider 27
#5 Oswald Thoma 22
#6 Bowers Eric H 16
#7 Checkley Peter Edward 15
#8 Parry Ian Charles 13
#9 Boydell Kenneth Raymond 12
#10 Bick David E 11

Latest patents

Publication Filing date Title
GB8923775D0 An hydraulic pump
GB8916015D0 Rotary positive displacement hydraulic machines
GB8910633D0 A railway retarding device
GB8900341D0 "Fast response solenoid"
GB8729064D0 Fast response solenoid
US4796655A Fluid control devices
GB8626678D0 Electrohydraulic proportional control valves
GB8621532D0 Fluid control devices
GB8610205D0 Induction coil
GB8529389D0 Booster assemblies
GB8505059D0 Retarders suitable for wagon speed control
GB8428461D0 Electromagnetic devices
GB8415879D0 Rotary positive displacement fluid-pressure machines
DE3420541A1 Jet propulsion unit for watercraft, and watercraft equipped with such units
GB8413540D0 Marine jet propulsion units
GB8412211D0 Retarders
GB8404169D0 Electrohydraulic servo valve
GB8330250D0 Rotary positive-displacement fluid-pressure machines
DE3334563A1 Shunting station
GB8320891D0 Railway marshalling yards