Description
Class C21B : MANUFACTURE OF IRON OR STEEL
Subclass 7/08: Blast furnaces (lifts associated with blast furnaces B66B 9/06) Top armourings
C21B 7/08
Sub-Class
Stats
- 8 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 6 Total Patent Owners
- 59 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 8052922 | Rotary batch distributor | Dec 26, 06 | Nov 08, 11 | Zakrytoe Aktsionernoe Obschestvo Nauchno-Proizvodstvenny I Kommerchesky Tsentr "Totem ", Zakrytoe Aktsionernoe Obschestvo “Nauchno-Proizvodstvenny I Kommerchesky Tsentr ″Totem”, |
| 8034157 | Method and device for charging feedstock | Oct 05, 06 | Oct 11, 11 | PRIMETALS TECHNOLOGIES AUSTRIA GMBH |
| 6540958 | Bell and hopper for shaft furnaces | Jun 22, 01 | Apr 01, 03 | PAUL WURTH S.A. |
| 6338815 | Steel cables driven furnace top chute feeder for blast furnace | Dec 13, 99 | Jan 15, 02 | Not available |
| 5997596 | Oxygen-fuel boost reformer process and apparatus | Sep 05, 97 | Dec 07, 99 | MIDREX TECHNOLOGIES, INC. |
| 5738822 | Shaft furnace charging device with rotating chute | Dec 06, 96 | Apr 14, 98 | PAUL WURTH S.A. |
| 5271609 | Plant comprising a shaft | May 27, 92 | Dec 21, 93 | VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH & CO. |
| 5226951 | Method of starting a plant for the production of pig iron or steel pre-material as well as arrangement for carrying out the method | Feb 19, 92 | Jul 13, 93 | VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH & CO. |
Recent Publications
Not Available
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 32 Months (last 2 years Issuances)
- 32 Months (last 5 years Issuances)