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WALKER FRANK H

Overview
  • Total Patents
    35
About

WALKER FRANK H has a total of 35 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Canada. Its main competitors in its focus markets transport, engines, pumps and turbines and environmental technology are PERMO DRIVE RES AND DEV PTY LT, HILBERER EDUARD and OLOFSSON ERLAND GEORGE.

Patent filings in countries

World map showing WALKER FRANK Hs patent filings in countries

Patent filings per year

Chart showing WALKER FRANK Hs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Walker Frank H 34
#2 Moore David P 1
#3 Dettinger John G 1

Latest patents

Publication Filing date Title
US2009223359A1 Hydraulic machine arrangement
WO2008122003A2 Piston arrangement and method for producing same
US2010101406A1 Hydraulic machine arrangement
WO2006122241A2 Hydraulic regenerative braking system for a vehicle
US2008185909A1 Hydraulic regenerative braking system for a vehicle
AU2003297206A1 Hydraulic regenerative braking system for a vehicle
US5971092A Vehicle drive system featuring split engine and accessory back drive
US5323688A Hydraulic regenerative braking and four wheel drive system
US5263401A Hydraulic regenerative braking and four wheel drive system
US5101925A Hydraulic wheel motor and pump
US5000282A Hydraulic wheel motor and pump
AU3686389A Hydraulic wheel motor and pump
US4883141A Hydraulic wheel motor and pump
US4896749A Emergency vehicle braking system and method for using same
CA174065A Tooth
CA148117A Air pump
CA149094A Carburetter
US1055004A Air-pump.
US1039229A Carbureter.
US1026889A Carbureter for starting internal-combustion engines.