F27D 1/02
Crowns
Official title: Crowns; Roofs
F27D1/02 (Crowns) appears on 84 US grants and 47 published applications in this corpus.
Search patents in F27D- Granted patents
- 84
- Published applications
- 47
- Assignees
- 65
- Inventors
- 176
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 3 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 3 |
| 2013 | 3 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 2 |
| 2016 | 4 | 7 |
| 2017 | 2 | 0 |
| 2018 | 3 | 2 |
| 2019 | 3 | 1 |
| 2020 | 2 | 4 |
| 2021 | 3 | 3 |
| 2022 | 2 | 5 |
| 2023 | 4 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Coke oven roof repair or replacement24 Feb 2026US 12,559,683 B2Paul Wurth S. A.
- Metallurgical furnace having an integrated off-gas hood6 May 2025US 12,292,237 B2Systems Spray-Cooled, Inc.
- Cover plate structure for glass fiber tank furnace forehearth4 Feb 2025US 12,215,049 B2Jushi Group Co., Ltd.
- Modular enclosure structure of high temperature heating furnace and installation method3 Sep 2024US 12,078,420 B2Rishang (Suzhou) Light Chemical Textile High-Tech Co., Ltd
- System and method for repairing a coke oven19 Dec 2023US 11,845,898 B2Suncoke Technology and Development LLC
- Glass furnace11 Jun 2026US 2026/0160497 A1
- Coke oven roof repair or replacement9 Oct 2025US 2025/0313756 A1Paul Wurth S. A.
- Holding device for holding a ceramic anchor brick on a furnace wall, a furnace comprising such a holding device, a method for fastening such a holding device to a furnace wall, and ceramic anchor brick for such a holding device10 Oct 2024US 2024/0337445 A1Refractory Intellectual Property GmbH & Co.KG
- Waste Battery Thermal Desorption Treatment System27 Jun 2024US 2024/0207913 A1Jereh Environmental Protection Technology Co., Ltd.
- Metallurgical furnace having an integrated off-gas hood8 Feb 2024US 2024/0044580 A1Systems Spray-Cooled, Inc.
Most cited
By later US patents
- Thermophotovoltaic generator in high temperature industrial process77US 6,538,193 B1JX Crystals Inc. · 2003
- Ceiling and wall construction39US 4,628,657 AKrupp Polysius AG · 1986
- System and method for repairing a coke oven27US 11,186,778 B2Suncoke Technology and Development LLC · 2021
- Ceramic fiber modular assemblies for lining furnace walls20US 4,440,099 ALa Farge Refractaires · 1984
- System and method for repairing a coke oven19US 10,851,306 B2Suncoke Technology and Development LLC · 2020