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NAT STEEL CORP

Overview
  • Total Patents
    909
About

NAT STEEL CORP has a total of 909 patent applications. Its first patent ever was published in 1941. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets surface technology and coating, machines and materials and metallurgy are NICKEL RAINBOW LTD, WARNER LONDON INC and REPUBLIC STEEL CORP.

Patent filings per year

Chart showing NAT STEEL CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Austin Lowell W 53
#2 Saunders William T 45
#3 Smith Edwin J 38
#4 Mayhew John T 27
#5 Smith John R 23
#6 Klein Clarence J 18
#7 Strassburger Julius H 17
#8 Altenburger Clarence L 17
#9 Shannon Harold S 15
#10 Vucich Michael G 14

Latest patents

Publication Filing date Title
US6516870B1 Tundish fluxing process
US6143100A Bake-hardenable cold rolled steel sheet and method of producing same
US6007642A Super low loss motor lamination steel
US5645121A Method of continuous casting using sealed tundish and improved tundish seal
US5544868A Blow pipe and gas lance for blast furance
US5600564A Coke oven battery with communication system
US5485387A Method and apparatus for performing cup earing test
US5571328A Bearing support for submerged rolls in hot dip coating operation
US5174822A Steel strip annealing and coating apparatus
US5099780A Bearing support for hot dip metal coating roll
US5078089A Oil spray coating booth
US5007318A Metal strip edge trimming apparatus
US4959939A Building panel mounting system
US4945746A Containment fence for runout table
US4886247A Ceramic brick retainer band for steel ladle
US4854488A Shroud tube support and changing device
US4761530A Electric induction heat treating furnace
US4845332A Galvanneal induction furnace temperature control system
US4717125A Metallurgical ladle with improved tilting lug
US4625787A Method and apparatus for controlling the level of liquid metal in a continuous casting mold