Description
Class C21B : MANUFACTURE OF IRON OR STEEL
Subclass 5/04: Making pig-iron in the blast furnace Making slag of special composition
C21B 5/04
Sub-Class
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 1 Total Patent Owners
- 47 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11851724 | Foundry coke products, and associated systems, devices, and methods | Nov 04, 22 | Dec 26, 23 | SunCoke Technology and Development LLC |
| 10000821 | Direct smelting process | Sep 15, 11 | Jun 19, 18 | Tata Steel Limited |
| 9624558 | Blast-furnace blowing coal and method for producing same | Apr 25, 13 | Apr 18, 17 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 9499878 | Composite briquette for steelmaking or ironmaking furnace charge | May 29, 14 | Nov 22, 16 | Not available |
Recent Publications
Not Available
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 42 Months (last 2 years Issuances)
- 42 Months (last 5 years Issuances)