Assignee
NAT STEEL CORP
108 granted patents·2,189 citations·filing 1970–2000
Top patents by PatentIndex Score
108 records- 0199US3995572AForming small diameter opening for aerosol, screw cap, or crown cap by multistage necking-in of drawn or drawn and ironed container bodyNAT STEEL CORP·Filed 1974·Granted Dec 7, 1976·172 cites·5 claims
- 0293US4330372ACoke oven emission control method and apparatusNAT STEEL CORP·Filed 1981·Granted May 18, 1982·107 cites·23 claims
- 0392US4497180AMethod and apparatus useful in cooling hot stripNAT STEEL CORP·Filed 1984·Granted Feb 5, 1985·32 cites·26 claims
- 0492US3998174ALight-weight, high-strength, drawn and ironed, flat rolled steel container body method of manufactureNAT STEEL CORP·Filed 1975·Granted Dec 21, 1976·66 cites·3 claims
- 0591US4414836AMethod of and apparatus for deep drawing metal containersNAT STEEL CORP·Filed 1982·Granted Nov 15, 1983·41 cites·28 claims
- 0690US4036056ASingle-slide press for carrying out multiple functions with a single work-input strokeNAT STEEL CORP·Filed 1976·Granted Jul 19, 1977·38 cites·8 claims
- 0789US4297154AMethod of manufacturing expanded reinforcing sheet materialNAT STEEL CORP·Filed 1980·Granted Oct 27, 1981·48 cites·41 claims
- 0889US4120419AHigh strength seamless chime can body, sheet metal container for vacuum packs, and manufactureNAT STEEL CORP·Filed 1976·Granted Oct 17, 1978·69 cites·3 claims
- 0989US4017367AIroning container stock manufacturing methodNAT STEEL CORP·Filed 1976·Granted Apr 12, 1977·19 cites·1 claims
- 1087US4159218AMethod for producing a dual-phase ferrite-martensite steel stripNAT STEEL CORP·Filed 1978·Granted Jun 26, 1979·29 cites·10 claims
- 1187US4095544AProduction of corrosion resistant seam-free can bodies from tinplateNAT STEEL CORP·Filed 1976·Granted Jun 20, 1978·36 cites·3 claims
- 1287US3964413AMethods for necking-in sheet metal can bodiesNAT STEEL CORP·Filed 1974·Granted Jun 22, 1976·45 cites·5 claims
- 1387US3956915ADrawing and ironing container stock and manufacturing methodsNAT STEEL CORP·Filed 1975·Granted May 18, 1976·35 cites·7 claims
- 1486US4315421AMethod of controlling the concentration and stability of an emulsionNAT STEEL CORP·Filed 1979·Granted Feb 16, 1982·44 cites·23 claims
- 1585US4259385AExpanded reinforcing sheet material, its method of manufacture, and sheet material reinforced therewithNAT STEEL CORP·Filed 1979·Granted Mar 31, 1981·41 cites·21 claims
- 1685US4243441AMethod for metal strip temperature controlNAT STEEL CORP·Filed 1979·Granted Jan 6, 1981·36 cites·17 claims
- 1782US4367996ATab opener end closure assembly methodNAT STEEL CORP·Filed 1981·Granted Jan 11, 1983·28 cites·5 claims
- 1881US4346580AManufacture of lightweight drawn and ironed can bodiesNAT STEEL CORP·Filed 1980·Granted Aug 31, 1982·28 cites·8 claims
- 1980US4119515AApparatus for electroplating sheet metalsNAT STEEL CORP·Filed 1977·Granted Oct 10, 1978·57 cites·37 claims
- 2079US6143100ABake-hardenable cold rolled steel sheet and method of producing sameNAT STEEL CORP·Filed 1998·Granted Nov 7, 2000·23 cites·12 claims
- 2179US4845332AGalvanneal induction furnace temperature control systemNAT STEEL CORP·Filed 1987·Granted Jul 4, 1989·59 cites·10 claims
- 2279US4167424ATreatment of metal strip with ultrasonic energy and apparatus thereforNAT STEEL CORP·Filed 1977·Granted Sep 11, 1979·27 cites·37 claims
- 2379US4057232APress for separating molten metal from drossNAT STEEL CORP·Filed 1976·Granted Nov 8, 1977·42 cites·4 claims
- 2479US4000009AWrought pure grade aluminum alloy and process for producing sameNAT STEEL CORP·Filed 1975·Granted Dec 28, 1976·17 cites·44 claims
- 2577US4416737AProcess of electroplating a nickel-zinc alloy on steel stripNAT STEEL CORP·Filed 1982·Granted Nov 22, 1983·21 cites·9 claims
- 2676US4202193AApparatus for controlling the concentration and stability of an emulsionNAT STEEL CORP·Filed 1978·Granted May 13, 1980·25 cites·13 claims
- 2776US4040282AIroning ring having improved lubricating characteristicsNAT STEEL CORP·Filed 1975·Granted Aug 9, 1977·20 cites·4 claims
- 2874US4432846ACleaning and treatment of etched cathode aluminum capacitor foilNAT STEEL CORP·Filed 1982·Granted Feb 21, 1984·27 cites·17 claims
- 2973US4267954AMethod of making nailable steel floor channelsNAT STEEL CORP·Filed 1979·Granted May 19, 1981·19 cites·4 claims
- 3073US4179913AMetal strip tensioning apparatus for use in continuous strip reduction cold mill and methodNAT STEEL CORP·Filed 1978·Granted Dec 25, 1979·16 cites·30 claims
- 3172US4128668AMethod of removing excess liquid coating from web edges in liquid coating thickness controlNAT STEEL CORP·Filed 1976·Granted Dec 5, 1978·20 cites·2 claims
- 3271US4407679AMethod of producing high tensile aluminum-magnesium alloy sheet and the products so obtainedNAT STEEL CORP·Filed 1980·Granted Oct 4, 1983·20 cites·16 claims
- 3370US4010081AApparatus for quenching and cooling cokeNAT STEEL CORP·Filed 1975·Granted Mar 1, 1977·14 cites·13 claims
- 3469US4257529AEasy-open retained tab structure for beverage canNAT STEEL CORP·Filed 1979·Granted Mar 24, 1981·29 cites·5 claims
- 3569US4238947AWork roll chock assembly for a rolling millNAT STEEL CORP·Filed 1979·Granted Dec 16, 1980·14 cites·21 claims
- 3669US3988216AMethod of producing metal strip having a galvanized coating on one side while preventing the formation of a zinc deposit on cathode meansNAT STEEL CORP·Filed 1975·Granted Oct 26, 1976·17 cites·32 claims
- 3767US6516870B1Tundish fluxing processNAT STEEL CORP·Filed 2000·Granted Feb 11, 2003·18 cites·10 claims
- 3867US3989604AMethod of producing metal strip having a galvanized coating on one sideNAT STEEL CORP·Filed 1975·Granted Nov 2, 1976·20 cites·21 claims
- 3966US4176994ACoke oven charging apparatusNAT STEEL CORP·Filed 1978·Granted Dec 4, 1979·13 cites·36 claims
- 4066US4086689AContinuous strip reduction cold millNAT STEEL CORP·Filed 1976·Granted May 2, 1978·13 cites·12 claims
- 4165US5645121AMethod of continuous casting using sealed tundish and improved tundish sealNAT STEEL CORP·Filed 1996·Granted Jul 8, 1997·13 cites·9 claims
- 4265US4761530AElectric induction heat treating furnaceNAT STEEL CORP·Filed 1987·Granted Aug 2, 1988·21 cites·14 claims
- 4364US5007318AMetal strip edge trimming apparatusNAT STEEL CORP·Filed 1989·Granted Apr 16, 1991·27 cites·8 claims
- 4464US4003511AMethod and apparatus for aligning strip end portions in a continuous strip operationNAT STEEL CORP·Filed 1976·Granted Jan 18, 1977·20 cites·8 claims
- 4564US3960607ANovel aluminum alloy, continuously cast aluminum alloy shapes, method of preparing semirigid container stock therefrom, and container stock thus preparedNAT STEEL CORP·Filed 1974·Granted Jun 1, 1976·13 cites·34 claims
- 4664US3951296AReinforced wall-ironed containerNAT STEEL CORP·Filed 1974·Granted Apr 20, 1976·39 cites·8 claims
- 4763US4550867AShroud tube manipulating and supporting apparatusNAT STEEL CORP·Filed 1983·Granted Nov 5, 1985·12 cites·5 claims
- 4863US3977842AProduct and processNAT STEEL CORP·Filed 1970·Granted Aug 31, 1976·20 cites·24 claims
- 4962US4479637AApparatus for and method of repairing bottom lining of a converterNAT STEEL CORP·Filed 1982·Granted Oct 30, 1984·10 cites·9 claims
- 5062US4132609AMethod of and apparatus for electrolytic treatment of metalNAT STEEL CORP·Filed 1977·Granted Jan 2, 1979·14 cites·26 claims
Showing the top 50 of 108 patent records by PatentIndex Score.
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