Description
Class C21B : MANUFACTURE OF IRON OR STEEL
Subclass 3/00: General features in the manufacture of pig-iron (mixers for pig-iron C21C 1/06)
C21B 3/00
Sub-Class
Stats
- 41 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 36 Total Patent Owners
- 273 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11959153 | Production of iron | Sep 06, 22 | Apr 16, 24 | TECHNOLOGICAL RESOURCES PTY LIMITED |
| 10144981 | Process for manufacturing reduced iron agglomerates | Feb 28, 13 | Dec 04, 18 | Kobe Steel Ltd. |
| 9976806 | Burning apparatus and method for manufacturing reduced iron using the same | Oct 29, 14 | May 22, 18 | POSCO |
| 9663837 | Device for recovering heat and fumes from slag resulting from the steel production cycle | Jun 03, 13 | May 30, 17 | G.A.P. S.P.A. |
| 9499872 | Iron reduction process and equipment | Feb 07, 13 | Nov 22, 16 | VALEAS RECYCLING AB, VAL'EAS RECYCLING SOLUTIONS AB, |
| 9376730 | Production of iron | Nov 03, 11 | Jun 28, 16 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| 9365906 | Process and device for charging into a smelting unit | Mar 06, 14 | Jun 14, 16 | PRIMETALS TECHNOLOGIES AUSTRIA GMBH |
| 8945465 | Compressive rod assembly for molten metal containment structure | Dec 08, 10 | Feb 03, 15 | NOVELIS INC. |
| 8916116 | Separation of iron from value metals in leaching of laterite ores | Dec 12, 12 | Dec 23, 14 | PROCESS RESEARCH ORTECH INC. |
| 8808422 | Method for increasing the penetration depth of an oxygen stream | Jul 27, 11 | Aug 19, 14 | PRIMETALS TECHNOLOGIES AUSTRIA GMBH |
| 8449814 | Systems and methods for melting scrap metal | Aug 09, 10 | May 28, 13 | MOLTEN METAL EQUIPMENT INNOVATIONS, LLC |
| 8372333 | Angled probe for vessel | Jan 08, 09 | Feb 12, 13 | GENERAL ELECTRIC COMPANY |
| 8226885 | Apparatus for bracing of sheet-metal joints in a high-temperature annealing furnace | Nov 04, 08 | Jul 24, 12 | EBNER INDUSTRIEOFENBAU GMBH |
| 8202476 | Heat exchanger system used in steel making | Oct 23, 07 | Jun 19, 12 | AMERIFAB, INC. |
| 8158056 | Reactor for producing metal nanoparticles and arrangement having the reactor | Feb 21, 08 | Apr 17, 12 | SAMSUNG SDI CO., LTD. |
| 8153050 | Device for implementing a high efficiency method of scooping-up slag from liquid iron | Apr 05, 04 | Apr 10, 12 | Not available |
| 8057736 | Hearth structure of rotary furnace hearth | Sep 15, 06 | Nov 15, 11 | NIPPON STEEL CORPORATION, NIPPON STEEL ENGINEERING CO., LTD., |
| 8007712 | Reinforced refractory crucibles for melting titanium alloys | Sep 28, 07 | Aug 30, 11 | GENERAL ELECTRIC COMPANY |
| 7842229 | Substrate processing apparatus and substrate rotating device | Oct 27, 05 | Nov 30, 10 | TOKYO ELECTRON LIMITED |
| 7686900 | Method for boltless heat treatment of thin flanges | Dec 05, 08 | Mar 30, 10 | GENERAL ELECTRIC COMPANY |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0034,665 | CATCHMENT PIT FOR MOLTEN METAL AND COOLANT WATER | Jul 01, 24 | Jan 30, 25 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 35 Months (last 2 years Issuances)
- 35 Months (last 5 years Issuances)