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WALKER MFG CO

Overview
  • Total Patents
    600
About

WALKER MFG CO has a total of 600 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets environmental technology, packaging and shipping and machines are WALKER MFG COMPANY OF WISCONSI, SWARS HELMUT and EMCON TECH GERMANY A GMBH.

Patent filings in countries

World map showing WALKER MFG COs patent filings in countries
# Country Total Patents
#1 United States 323
#2 Canada 175
#3 United Kingdom 42
#4 France 35
#5 Germany 21
#6 Belgium 2
#7 Sweden 2

Patent filings per year

Chart showing WALKER MFG COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Powers Walter H 50
#2 Mckenzie William G 30
#3 Arnes Lyle L 30
#4 Lentz Ervin C 27
#5 Rhodes Keith H 25
#6 May Claude H 23
#7 Mizer Joseph J 20
#8 Jettinghoff Paul F 14
#9 Heath Robert A 13
#10 Offer Robert J 13

Latest patents

Publication Filing date Title
US2006177292A1 High-clearance dump system with independent tilt control
US6935446B2 Walk behind mower
US7146787B2 Walk behind mower
US3648803A Exhaust system
US3613830A One-piece tube and shell assembly for silencer
US3500954A Exhaust silencing system
US3495680A Exhaust silencing system
US3686837A Dual media air filter
US3478601A Filter test apparatus
US3485380A Filter with ratchet retaining ring
US3470724A Pipe end forming machine
US3485319A Exhaust gas converter or muffler tube with staggered louvers
US3434565A Silencer with angled tuning tube leading to helmholtz resonator
US3513939A Exhaust gas muffler
US3499309A Rotatable punch for tube bender
US3463272A Small vehicle lift
US3483725A Flattener for tube bender
US3448658A Restrictor for hydraulic pump
US3420481A Transmission saddle for lift
US3429397A Laminated conduit and acoustic silencer