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SPROUT WALDRON & CO INC

Overview
  • Total Patents
    64
About

SPROUT WALDRON & CO INC has a total of 64 patent applications. Its first patent ever was published in 1954. It filed its patents most often in United States, United Kingdom and Switzerland. Its main competitors in its focus markets machines, textiles and paper and machine tools are REINHALL ROLF, REINHALL ROLF BERTIL and ED JONES CORP.

Patent filings in countries

World map showing SPROUT WALDRON & CO INCs patent filings in countries

Patent filings per year

Chart showing SPROUT WALDRON & CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Donald Fisher Chester 19
#2 Fisher Chester Donald 10
#3 Chester Donald Fisher 5
#4 Fischer C 3
#5 Green Frank B K 3
#6 Fisher C 3
#7 Holmes W 2
#8 Grahek Joseph L 2
#9 Fuller Beatrice Pearl 2
#10 Ihrig C 2

Latest patents

Publication Filing date Title
US3981664A Main shaft support for pellet mills
US3893631A Twin refiner with double floating discs
US3885665A Reversible refiner feeder
US3847359A Disc type refiner with automatic plate spacing control
US3853276A Reversible refiner feeder
US3701488A Pressurized refiner seal assembly
US3574411A Side inlet rotary valve
US3473745A Refining plate for high consistency pulp
US3441227A Refiner feeder
US3415494A Liquid addition mixer
DE1692760A1 Method and device for the production of cooked or expanded and extruded tablets
CH482413A Method and device for making cooked, expanded and extruded tablets
GB1121381A Process and apparatus for manufacture of cooked, expanded and extruded pellets
US3338559A Apparatus for mixing particulate materials
US3318582A Mixer
US3327870A Bolted bin construction
US3295774A Attrition mill apparatus
US3276701A Attrition mill apparatus
US3138167A Mixer for feeds and the like
US3224814A Conduit for pneumatic conveying systems