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HEMPHILL CO

Overview
  • Total Patents
    1,279
About

HEMPHILL CO has a total of 1,279 patent applications. Its first patent ever was published in 1914. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets textiles and paper, consumer goods and machines are FUJIAN XIN GANG TEXTILE MACHINERY CO LTD, STANDARD TRUMP BROS MACHINE CO and ADELE HILSCHER.

Patent filings in countries

World map showing HEMPHILL COs patent filings in countries
# Country Total Patents
#1 United States 428
#2 United Kingdom 260
#3 Canada 231
#4 France 161
#5 Germany 144
#6 Switzerland 32
#7 Spain 22
#8 Denmark 1

Patent filings per year

Chart showing HEMPHILL COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lawson Robert H 287
#2 Cloutier Arthur N 81
#3 St Pierre Eugene 78
#4 Green Isaac H C 52
#5 Pierre Eugene St 45
#6 Smith Jr William L 42
#7 Oscar Fregeolle 39
#8 John Lawson 32
#9 Bosworth George P 30
#10 Lawson John 26

Latest patents

Publication Filing date Title
US3537831A Grinding and polishing mechanism
GB1158610A Card Clothing
US2898752A Pick for knitting machines
US3071949A Knitting machine mechanism and method
GB816782A Improvements in or relating to circular knitting machines
US2823529A Cam assembly for knitting machines
US2893227A Sinker cap for circular knitting machines
US2972875A Fabric draw-off mechanism
US2852099A Lubricator for knitting machines
GB812628A Improvements in or relating to circular knitting machines
US3096634A Take-up device for circular knitting machine
GB811636A Improvements in or relating to methods of and means for drawing fabric from the needles of a circular knitting machine
ES223584A1 A circular knitting machine (Machine-translation by Google Translate, not legally binding)
US2844952A Fabric tensioning method and mechanism
US3036449A Fabric tensioning device for knitting machines and method
US2799148A Knitting machine control mechanism
GB799131A Improvements in or relating to circular, independent needle, knitting machines
US2719417A Pick mechanism for knitting machines
US2702462A Method and apparatus for cutting and binding yarns
US2886959A Yarn controlling device and method of knitting