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NAT MALLEABLE CASTINGS CO

Overview
  • Total Patents
    507
About

NAT MALLEABLE CASTINGS CO has a total of 507 patent applications. Its first patent ever was published in 1896. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets transport, civil engineering and materials and metallurgy are MINER CO W H, BUCKEYE MALLEABLE IRON AND COUPLER COMPANY and NAT MALLEABLE & STEEL CASTINGS.

Patent filings in countries

World map showing NAT MALLEABLE CASTINGS COs patent filings in countries
# Country Total Patents
#1 United States 407
#2 Canada 43
#3 United Kingdom 18
#4 France 17
#5 Austria 15
#6 Germany 5
#7 Switzerland 2

Patent filings per year

Chart showing NAT MALLEABLE CASTINGS COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stephenson John W 59
#2 Krakau Harry T 47
#3 Schmidt Ernest H 40
#4 Tower Clinton A 28
#5 Coffin Walter E 28
#6 Bazeley Arthur J 28
#7 Willison John 27
#8 Pope Henry F 24
#9 Buckius Albert O Jr 22
#10 Byers Jacob J 17

Latest patents

Publication Filing date Title
GB224755A Improvements in or relating to coupling mechanism for railway vehicles
GB193425A Improvements in combined draught and buffing gear for railway vehicles
GB199635A Improvements in and relating to couplings for railway and like vehicles
US1452725A Shock-absorbing mechanism
DE367702C Connection of an automatic clutch with a friction shock absorber device
GB174946A Improvements in automatic couplings for railway and like vehicles
GB145596A Improvements in and relating to shock absorbing mechanism
GB146952A Improvements in and relating to shock absorbing mechanism
GB145594A Improvements in and relating to shock absorbing mechanism
GB145592A Improvements in and relating to shock absorbing mechanism
GB145595A Improvements in and relating to shock absorbing mechanism
GB145593A Improvements in and relating to shock absorbing mechanism
US1440052A Coupling centering and supporting mechanism
GB140826A An improved method of refining iron for castings
GB140822A Improvements relating to steel and its heat treatment
US1476869A Buffer
US1395251A Coupling-operating mechanism
US1431569A Hand-brake mechanism
US1358822A Manufacture of journal-boxes
US1358821A Manufacture of journal-boxes