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NAT MALLEABLE & STEEL CASTINGS

Overview
  • Total Patents
    873
About

NAT MALLEABLE & STEEL CASTINGS has a total of 873 patent applications. Its first patent ever was published in 1919. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets transport, mechanical elements and machines are BUCKEYE MALLEABLE IRON AND COUPLER COMPANY, MINER CO W H and MURRAY GEORGE C.

Patent filings in countries

World map showing NAT MALLEABLE & STEEL CASTINGSs patent filings in countries
# Country Total Patents
#1 United States 380
#2 Canada 246
#3 United Kingdom 88
#4 France 69
#5 Germany 27
#6 Spain 24
#7 Austria 15
#8 Switzerland 14
#9 Belgium 8
#10 Greece 2

Patent filings per year

Chart showing NAT MALLEABLE & STEEL CASTINGSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Metzger William J 110
#2 Shafer James A 61
#3 Spence Hubert L 32
#4 Metzger William Joseph 29
#5 Shafer James Andrew 27
#6 Willison Donald 27
#7 Bazeley Arthur J 27
#8 Buckius Albert O 27
#9 Schmidt Ernest H 25
#10 Spence Hubert De Laserre 24

Latest patents

Publication Filing date Title
ES260659A1 Improvements introduced in couplers for wagons (Machine-translation by Google Translate, not legally binding)
US3071256A Transitional coupling device
US3000330A Car truck
US2997183A Transitional coupling device
US2997184A Railway car coupler with laterally movable control
GB897191A Improvements in or relating to apparatus for lifting cargo containers
ES252497A1 A system of means to secure a container on the surface of a support directed up (Machine-translation by Google Translate, not legally binding)
ES251434A1 A system for the handling of materials (Machine-translation by Google Translate, not legally binding)
GB866233A A railway buffing and draft gear
GB886817A Improvements in or relating to a draft and buff arrangement for railway vehicles
US2965045A Car body center plate
US2956695A Transitional coupling device
US2959300A Transitional coupling mechanism
ES245426A1 Improvements in the closure fixing mechanism for use in railway car couplers (Machine-translation by Google Translate, not legally binding)
GB887726A Improvements in or relating to automatic railway vehicle couplers having lock-set mechanism
US2960042A Car body center plate
ES243407A1 Improvements introduced in wagon couplings (Machine-translation by Google Translate, not legally binding)
ES243406A1 Improvements in wagon couplings (Machine-translation by Google Translate, not legally binding)
GB841452A Improvements in or relating to a car coupler
GB857619A Improvements in or relating to a car coupler