C21C 2250/08
Porous plug
C21C2250/08 (Porous plug) appears on 7 US grants and 9 published applications in this corpus.
Search patents in C21C- Granted patents
- 7
- Published applications
- 9
- Assignees
- 7
- Inventors
- 34
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter10 Mar 2026US 12,571,061 B2Soochow University
- System and method for porous plug removal and installation2 Jan 2024US 11,858,033 B2J.H. Fletcher & Co.
- Securing device for a cylindrical ceramic hollow body and fireproof ceramic gas purging brick having such type of securing device25 Jun 2019US 10,330,387 B2Refractory Intellectual Property GmbH & Co.KG
- Refractory purging devices18 Oct 2016US 9,469,882 B2Vesuvius Crucible Company
- Method for exchangeably fastening a refractory purge plug or sleeve9 Dec 2014US 8,906,290 B2Stopinc Aktiengesellschaft
- Apparatus and method for refining liquid metal24 Sep 2026US 2026/0284739 A1Danieli & C. Officine Meccaniche SpA
- Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter14 Sep 2023US 2023/0287529 A1Soochow University
- System and method for porous plug removal and installation20 Jul 2023US 2023/0226597 A1J.H. Fletcher & Co.
- Securing device for a cylindrical ceramic hollow body and fireproof ceramic gas purging brick having such type of securing device23 Feb 2017US 2017/0051979 A1Refractory Intellectual Property GmbH & Co.KG
- Refractory purging devices9 Oct 2014US 2014/0300036 A1Vesuvius Crucible Company
Most cited
By later US patents
- Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment4US 8,105,415 B2Nucor Corporation · 2012
- Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment2US 8,313,553 B2Nucor Corporation · 2012
- Method for exchangeably fastening a refractory purge plug or sleeve1US 8,906,290 B2Stopinc Aktiengesellschaft · 2014