Description
Class C21B : MANUFACTURE OF IRON OR STEEL
Subclass 7/12: Blast furnaces (lifts associated with blast furnaces B66B 9/06) Opening or sealing the tap holes
C21B 7/12
Sub-Class
Stats
- 45 US PATENTS IN FORCE
- 4 US APPLICATIONS PENDING
- 32 Total Patent Owners
- 220 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12259184 | Method of heating up furnace bottom, and burner lance used in the method | Mar 23, 20 | Mar 25, 25 | JFE Steel Corporation |
| 12181222 | Tap hole plug gun | Mar 13, 19 | Dec 31, 24 | TMT - TAPPING MEASURING TECHNOLOGY SÀRL |
| 11821048 | Hole-opening bit and tap hole opening method using same | Mar 10, 20 | Nov 21, 23 | JFE Steel Corporation |
| 11454445 | Swiveling sanding system | Aug 14, 19 | Sep 27, 22 | Celebre 2000 Inc. |
| 11371105 | Smelting process and apparatus | May 02, 17 | Jun 28, 22 | Tata Steel Limited |
| 11306541 | Drill bit | Oct 10, 16 | Apr 19, 22 | TMT - TAPPING MEASURING TECHNOLOGY SARL |
| 10975449 | Mud gun cap | Apr 26, 19 | Apr 13, 21 | J. C K. Industries, Inc. |
| 10857593 | Method and device for repairing a refractory shell of a metallurgical vessel | Dec 04, 15 | Dec 08, 20 | Refractory Intellectual Property GMBH & Co KG |
| 10781497 | Method of sealing and repairing a refractory tap hole | Dec 14, 15 | Sep 22, 20 | Tata Steel Limited |
| 10502491 | Sealing valve arrangement for a shaft furnace charging installation | Sep 06, 16 | Dec 10, 19 | Paul Wurth SA |
| 10400294 | Device for inserting a refractory block into a taphole structure of a metallurgical vessel, in particular a basic oxygen furnace | Nov 03, 15 | Sep 03, 19 | Refractory Intellectual Property GmbH & Co. KG |
| 10281213 | Tap-hole refurbishing | Dec 09, 14 | May 07, 19 | TMT—TAPPING MEASURING TECHNOLOGY SÀRL |
| 10260116 | Apparatus for shaving tap hole surface of blast furnace or the like | Dec 25, 15 | Apr 16, 19 | TRYTEC CO., LTD. |
| 10112818 | Liquid dispensing tap and closure assembly therefor | Jun 07, 17 | Oct 30, 18 | Scholle IPN Corporation |
| 10035250 | Control of the working frequency of an impact mechanism | Mar 04, 14 | Jul 31, 18 | TMT-BBG RESEARCH AND DEVELOPMENT GMBH |
| 9759490 | Oxygen lance with at least one coil | Oct 28, 15 | Sep 12, 17 | LEWIS AUSTRALIA PTY LTD |
| 9689616 | Device for supplying rinsing medium in a hammer drill | Sep 07, 12 | Jun 27, 17 | TMT-BBG RESEARCH AND DEVELOPMENT GMBH |
| 9248498 | Method for automatically pouring molten metal by tilting a ladle and a medium for recording programs for controlling a tilt of a ladle | Jan 26, 11 | Feb 02, 16 | SINTOKOGIO, LTD., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY, |
| 8968640 | Clay gun machine cannon for metallurgical furnaces | Jan 12, 11 | Mar 03, 15 | TMT Tapping-Measuring-Technology GmbH |
| 8906290 | Method for exchangeably fastening a refractory purge plug or sleeve | Nov 17, 09 | Dec 09, 14 | Stopinc Aktiengesellschaft |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0075,279 | Delay Ignitor Cap, Blowback Ignitor Cap, and Combination Ignitor Cap for a Thermal Lance and Thermal Lances Including Such Ignitor Caps | Apr 25, 23 | Mar 06, 25 | Reuning-McKim, Inc. |
| 2024/0219,121 | OXYGEN LANCE GUIDING ASSEMBLY | May 06, 21 | Jul 04, 24 | Not available |
| 2022/0178,615 | TAPHOLE PLUGGING GUN | Mar 13, 19 | Jun 09, 22 | Not available |
| 2017/0342,513 | Method of Sealing and Repairing a Refractory Tap Hole | Dec 14, 15 | Nov 30, 17 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
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)