F27D 21/0021
Devices for monitoring linings for wear
Official title: {Devices for monitoring linings for wear}
F27D21/0021 (Devices for monitoring linings for wear) appears on 99 US grants and 96 published applications in this corpus.
Search patents in F27D- Granted patents
- 99
- Published applications
- 96
- Assignees
- 77
- Inventors
- 255
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 7 |
| 2004 | 5 | 5 |
| 2005 | 3 | 2 |
| 2006 | 2 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 3 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 4 |
| 2014 | 0 | 2 |
| 2015 | 1 | 3 |
| 2016 | 3 | 6 |
| 2017 | 4 | 9 |
| 2018 | 5 | 2 |
| 2019 | 5 | 4 |
| 2020 | 6 | 7 |
| 2021 | 2 | 6 |
| 2022 | 3 | 7 |
| 2023 | 7 | 8 |
| 2024 | 8 | 3 |
| 2025 | 3 | 4 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for measuring cooling plate thickness in a blast furnace25 Aug 2026US 12,716,717 B2Paul Wurth S. A.
- Instrumented plate for oven11 Aug 2026US 12,704,327 B2Saint-Gobain Centre De Recherches Et D ' Etudes Europeen
- System and method for monitoring and controlling furnaces13 Jan 2026US 12,523,427 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Rotary kiln brick layer thermal monitoring systems8 Jul 2025US 12,352,499 B2Quantum Ir Technologies, LLC
- Method for monitoring the wear of a refractory lining of a blast furnace8 Apr 2025US 12,270,606 B2ArcelorMittal
- Refractory monitoring system for high-voltage and high-temperature environment applications6 Aug 2026US 2026/0227184 A1
- System and method for measuring cooling plate thickness in a blast furnace11 Jun 2026US 2026/0160547 A1Paul Wurth S. A.
- Temperature measuring system without damage to ladle structure16 Apr 2026US 2026/0104296 A1Rhi Magnesita (Dalian) Co., Ltd.
- Instrumented plate for oven9 Oct 2025US 2025/0314428 A1Saint-Gobain Centre De Recherches Et D ' Etudes Europeen
- Apparatus for inspecting and/or restoring a hostile environment and corresponding method26 Jun 2025US 2025/0207861 A1Danieli Automation S.P.A.
Most cited
By later US patents
- Scanning laser measurement system69US 5,212,738 AMartin Marietta Magnesia Specialties Inc. · 1993
- Apparatus for monitoring wall surface55US 6,002,993 ANippon Steel Corporation · 1999
- Repairing apparatus for furnace wall38US 4,649,858 ASumitomo Metal Industries, Ltd. · 1987
- Refractory monitoring temperature sensor and refractory erosion location measuring device29US 5,158,366 AKabushiki Kaisha Kobe Seiko Sho · 1992
- System for recording an object space27US 7,330,242 B2FERROTRON TECHNOLOGIES Gmbh · 2008