F27D 1/021
Suspended roofs
Official title: {Suspended roofs}
F27D1/021 (Suspended roofs) appears on 27 US grants and 11 published applications in this corpus.
Search patents in F27D- Granted patents
- 27
- Published applications
- 11
- Assignees
- 20
- Inventors
- 57
- Latest grant
- 3 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 3 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Industrial furnace cover27 Sep 2016US 9,453,679 B2Refractory Intellectual Property GmbH & Co.KG
- Bridgelike support structure made of fireproof ceramic bricks12 Jul 2016US 9,388,569 B2Refractory Intellectual Property GmbH & Co.KG
- Replaceable insulation roof for industrial oven12 Apr 2016US 9,310,132 B1Carbonyx, Inc.
- Apparatus for melting and refining impure nonferrous metals, particularly scraps of copper and/or impure copper originating from the processing of minerals24 Feb 2015US 8,961,866 B2
- Glass furnace11 Jun 2026US 2026/0160497 A1
- 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
- Side-supported cantilever furnace roof8 Jun 2023US 2023/0175779 A1Systems Spray-Cooled, Inc.
- Modular enclosure structure of high temperature heating furnace and installation method9 Dec 2021US 2021/0381768 A1Rishang (Suzhou) Light Chemical Textile High-Tech Co., Ltd
- Ceiling construction12 Feb 2015US 2015/0040805 A1Hans Lingl Anlagenbau und Verfahrenstechnik GmbH & Co. KG
Most cited
By later US patents
- Refractory support device and associated method15US 6,058,859 A2000
- Suspended roof construction for industrial furnaces13US 4,424,756 AMerkle Engineers, Inc. · 1984
- High temperature furnace nose construction10US 4,463,689 AMerkle Engineers, Inc. · 1984
- Readily repairable and lightweight cover for a heated vessel9US 4,640,202 AEltech Systems Corporation · 1987
- Curved nose refractory construction9US 4,864,945 AMerkle Engineers, Inc. · 1989