Description
Class C21B : MANUFACTURE OF IRON OR STEEL
Subclass 5/02: Making pig-iron in the blast furnace Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
C21B 5/02
Sub-Class
Stats
- 19 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 12 Total Patent Owners
- 88 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11572597 | P process of making pig iron in a blast furnace using pellets containing thermoplastic and cellulosic materials | Jun 19, 18 | Feb 07, 23 | SUBCOAL INTERNATIONAL B.V. |
| 11525167 | Operating method of an iron making installation and associated operating installation | Jun 15, 18 | Dec 13, 22 | Arcelormittal Commercial RPS S.A.R.L. |
| 9988695 | Method for producing an agglomerate made of fine material containing metal oxide for use as a blast furnace feed material | Sep 25, 15 | Jun 05, 18 | Rheinkalk GmbH |
| 9945001 | Blast furnace operation method and lance | Mar 27, 14 | Apr 17, 18 | JFE Steel Corporation |
| 9624558 | Blast-furnace blowing coal and method for producing same | Apr 25, 13 | Apr 18, 17 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 9109267 | Process for the introduction of inorganic solids into hot liquid melts | Jun 30, 11 | Aug 18, 15 | SACHTLEBEN CHEMIE GMBH |
| 9023126 | Additive for treating resulphurized steel | Mar 03, 09 | May 05, 15 | Affival |
| 8992663 | May 05, 10 | Mar 31, 15 | THYSSENKRUPP INDUSTRIAL SOLUTIONS AG | |
| 8969236 | Process and catalyst for production of mixed alcohols from synthesis gas | Nov 01, 11 | Mar 03, 15 | THE UNIVERSITY OF WYOMING RESEARCH CORPORATION D/B/A WESTERN RESEARCH INSTITUTE |
| 8899884 | Metering system, dense phase conveying system and method for supplying bulk material in powder form | Oct 08, 10 | Dec 02, 14 | LINDE AKTIENGESELLSCHAFT |
| 8871004 | Methods for agglomerating ores | Aug 02, 10 | Oct 28, 14 | UNIVERSITY OF UTAH |
| 8834747 | Compositions containing tin nanoparticles and methods for use thereof | Mar 03, 11 | Sep 16, 14 | LOCKHEED MARTIN CORPORATION |
| 8603215 | Composition of amorphous iron oxide hydroxide, desulfurizer comprising the same, and methods for preparing and regenerating the desulfurizer | Apr 29, 10 | Dec 10, 13 | Beijing Sanju Environmental Protection and New Material Co., Ltd. |
| 8551905 | Metal-carbon compositions | Nov 15, 12 | Oct 08, 13 | Third Millennium Materials, LLC |
| 8546292 | Metal-carbon compositions | Nov 15, 12 | Oct 01, 13 | Third Millennium Materials, LLC |
| 8541335 | Metal-carbon compositions | Nov 15, 12 | Sep 24, 13 | Third Millennium Materials, LLC |
| 8541336 | Metal-carbon compositions | Nov 15, 12 | Sep 24, 13 | Third Millennium Materials, LLC |
| 8349759 | Metal-carbon compositions | Feb 04, 11 | Jan 08, 13 | Third Millennium Materials, LLC |
| 7771507 | Hydraulic mineral composition, production method thereof and hydraulic binders and cementitious products containing one such composition | Dec 16, 04 | Aug 10, 10 | LAFARGE |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0019,781 | METHODS FOR PRODUCING FERROUS ALLOYS IN METALLURGICAL FURNACES | Dec 15, 22 | Jan 16, 25 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 37 Months (last 2 years Issuances)
- 37 Months (last 5 years Issuances)