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JOHN WALDRON CORP

Overview
  • Total Patents
    111
About

JOHN WALDRON CORP has a total of 111 patent applications. Its first patent ever was published in 1922. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets textiles and paper, packaging and shipping and machines are JOHN C MOTTER PRINTING PRESS C, KATSURA ROLLER SEISAKUSHO KK and GOSS CONTIWEB BV.

Patent filings in countries

World map showing JOHN WALDRON CORPs patent filings in countries
# Country Total Patents
#1 United States 94
#2 United Kingdom 8
#3 Canada 6
#4 Germany 3

Patent filings per year

Chart showing JOHN WALDRON CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Case Lynn B 30
#2 Dickhaut Charles A 18
#3 Willis Charles C 11
#4 Pomper Anthony W 9
#5 Waechter Charles J 5
#6 Stempel Laszlo M 5
#7 Dalton George A 4
#8 Francke William J 4
#9 Warner Sterling W 4
#10 Waldron William H 4

Latest patents

Publication Filing date Title
US3034631A Coated sheet inserter
US2895552A Transverse web cutting apparatus having sheet delivery mechanism using timed vacuum belts
US2837024A Ink fountain blade
US2842092A Reverse roll coating machine with blade support for web
US2762077A Method and machine for casting film
US2846046A Single sheet delivery device for web fed press
US2747808A Inching device for automatic drum winder
GB743465A Gear type coupling device
US2778303A Rotary offset printing press roll support
US2819670A Barrel printing apparatus
US2793588A Printing blanket mounting and tensioning apparatus
US2769495A Web cutting and sheet delivery and stacking mechanism
US2775409A Web roll replenisher
US2699656A Gear type coupling device
US2688919A Doctor blade holder
US2775449A Paper feeding mechanism
GB727602A Improvements in or relating to web coating apparatus
US2679231A Web coating apparatus
US2705424A Pick tester
GB666317A Improvements in web winding machines