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WILLIAMS PATENT CRUSHER & PULV

Overview
  • Total Patents
    222
About

WILLIAMS PATENT CRUSHER & PULV has a total of 222 patent applications. Its first patent ever was published in 1897. It filed its patents most often in United States, Canada and Japan. Its main competitors in its focus markets machines, chemical engineering and environmental technology are NORDBERG INC, PENNSYLVANIA CRUSHER CO and AMERICAN PULVERIZER.

Patent filings in countries

World map showing WILLIAMS PATENT CRUSHER & PULVs patent filings in countries
# Country Total Patents
#1 United States 185
#2 Canada 24
#3 Japan 7
#4 United Kingdom 5
#5 Poland 1

Patent filings per year

Chart showing WILLIAMS PATENT CRUSHER & PULVs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Williams Milton F 83
#2 Williams Robert M 50
#3 Plaisted Harold M 15
#4 Frickey Edward H 12
#5 Williams Jr Robert M 6
#6 Campbell Edward B 5
#7 Williams Milton Franklin 5
#8 Robaato Emu Uiriamuzu 5
#9 Williams R 4
#10 Cornwall Frederick R 4

Latest patents

Publication Filing date Title
US5785583A Material cutting rotor assembly
US5743472A Material reduction apparatus
US5474239A Material shredding apparatus
US5395057A Interchangeable and reversible material reducing apparatus
US5381971A Grinding apparatus
US5018456A System for disposing of sludge
US4798342A Fuel processing system for control of nitrous oxide emissions
US4795036A Rotary disc screen conveyor apparatus
US4778061A Air classifier apparatus
US4767066A Downdraft reversible hammer mill
US4730790A Waste material classifying and reducing apparatus
US4721257A Rotary shredding apparatus
US4640204A Fluidized bed combustion apparatus and method of operating same
US4729516A Fluff mill
CA1235678A Center feed material grinding mill
US4658964A Rotary disc screen and method of operation
US4638952A Method of fluid coke reduction
US4602744A Method of controlling a grinding roller mill
US4599954A Sewage sludge disposal process and apparatus therefor
US4641788A Method of simultaneously grinding coal and dolomite