C21C 5/4673
Measuring and sampling devices
Official title: {Measuring and sampling devices}
C21C5/4673 (Measuring and sampling devices) appears on 202 US grants and 186 published applications in this corpus.
Search patents in C21C- Granted patents
- 202
- Published applications
- 186
- Assignees
- 135
- Inventors
- 560
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 1 |
| 2002 | 3 | 2 |
| 2003 | 7 | 8 |
| 2004 | 5 | 7 |
| 2005 | 5 | 3 |
| 2006 | 1 | 7 |
| 2007 | 1 | 12 |
| 2008 | 5 | 3 |
| 2009 | 2 | 8 |
| 2010 | 7 | 8 |
| 2011 | 4 | 11 |
| 2012 | 5 | 4 |
| 2013 | 5 | 8 |
| 2014 | 5 | 4 |
| 2015 | 3 | 7 |
| 2016 | 3 | 11 |
| 2017 | 4 | 6 |
| 2018 | 8 | 8 |
| 2019 | 4 | 5 |
| 2020 | 7 | 6 |
| 2021 | 4 | 7 |
| 2022 | 0 | 8 |
| 2023 | 5 | 9 |
| 2024 | 8 | 18 |
| 2025 | 2 | 9 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Decarburization refining method for molten steel under reduced pressure19 May 2026US 12,630,893 B2Jfe Steel Corporation
- Steel making plant with electric arc furnace21 Apr 2026US 12,607,409 B2SMS group GmbH
- Refining process control device and refining process control method7 Apr 2026US 12,595,523 B2Jfe Steel Corporation
- Molten iron dephosphorization method24 Mar 2026US 12,584,183 B2Jfe Steel Corporation
- Liquid level detection method and detection apparatus for the same, molten material liquid level detection method and detection apparatus for the same, and method for operating vertical furnace24 Mar 2026US 12,584,690 B2Jfe Steel Corporation
- Molten material height detection method, molten material height detection apparatus, and method for manufacturing molten material30 Jul 2026US 2026/0219092 A1Jfe Steel Corporation
- Molten iron dephosphorization method2 Jul 2026US 2026/0185173 A1Jfe Steel Corporation
- Method of smelting steel and method of producing steel30 Apr 2026US 2026/0117332 A1Jfe Steel Corporation
- Method for manufacturing steel30 Apr 2026US 2026/0117333 A1Hyundai Steel Company
- Temperature measuring system without damage to ladle structure16 Apr 2026US 2026/0104296 A1Rhi Magnesita (Dalian) Co., Ltd.
Most cited
By later US patents
- Probe for taking gas samples and heat measurements in a shaft furnace485US 5,108,192 APaul Wurth S. A. · 1992
- Scanning laser measurement system69US 5,212,738 AMartin Marietta Magnesia Specialties Inc. · 1993
- Distance measuring method and apparatus therefor67US 5,329,467 ANKK Corporation · 1994
- Method and apparatus for measuring slag foaming using microwave lever meter41US 4,210,023 ASumitomo Metal Industries, Ltd. · 1980
- Method for measuring temperature of molten metal received in vessel39US 4,377,347 ANippon Kokan Kabushiki Kaisha · 1983