F27D 9/00
Cooling of furnaces or of charges therein
Official title: Cooling of furnaces or of charges therein (casings, linings, walls or roofs incorporating cooling arrangements F27D1/12)
F27D9/00 (Cooling of furnaces or of charges therein) appears on 724 US grants and 567 published applications in this corpus.
Search patents in F27D- Granted patents
- 724
- Published applications
- 567
- Assignees
- 518
- Inventors
- 1,705
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 24 | 0 |
| 1981 | 15 | 0 |
| 1982 | 7 | 0 |
| 1983 | 12 | 0 |
| 1984 | 18 | 0 |
| 1985 | 10 | 0 |
| 1986 | 11 | 0 |
| 1987 | 9 | 0 |
| 1988 | 9 | 0 |
| 1989 | 13 | 0 |
| 1990 | 13 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 10 | 0 |
| 1994 | 22 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 19 | 0 |
| 1999 | 14 | 0 |
| 2000 | 21 | 0 |
| 2001 | 18 | 10 |
| 2002 | 17 | 8 |
| 2003 | 17 | 17 |
| 2004 | 19 | 22 |
| 2005 | 10 | 8 |
| 2006 | 9 | 17 |
| 2007 | 4 | 14 |
| 2008 | 5 | 13 |
| 2009 | 14 | 9 |
| 2010 | 7 | 10 |
| 2011 | 9 | 15 |
| 2012 | 8 | 18 |
| 2013 | 14 | 33 |
| 2014 | 12 | 24 |
| 2015 | 16 | 20 |
| 2016 | 16 | 31 |
| 2017 | 21 | 18 |
| 2018 | 21 | 36 |
| 2019 | 20 | 28 |
| 2020 | 27 | 28 |
| 2021 | 18 | 32 |
| 2022 | 23 | 33 |
| 2023 | 20 | 33 |
| 2024 | 30 | 32 |
| 2025 | 27 | 39 |
| 2026 | 18 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Double effect absorption cooling for industrial applications25 Aug 2026US 12,716,655 B2Saudi Arabian Oil Company
- System and method for measuring cooling plate thickness in a blast furnace25 Aug 2026US 12,716,717 B2Paul Wurth S. A.
- Semiconductor high pressure annealing device25 Aug 2026US 12,721,088 B2Tokyo Electron Limited
- Metallurgical furnace11 Aug 2026US 12,704,326 B2Metso Metals Oy
- High pressure heat treatment apparatus4 Aug 2026US 12,698,939 B2HPSP Co., Ltd.
- Parallel-flow regenerative shaft kiln and method for burning carbonate rock8 Oct 2026US 2026/0309418 A1Maerz Ofenbau AG
- Systems and methods for direct reduction of iron ore24 Sep 2026US 2026/0287255 A1Uchicago Argonne, LLC
- Co2-free production of artificial pozzolans, in particular from clay10 Sep 2026US 2026/0265126 A1thyssenkrupp AG
- Furnace tube and control method therefor10 Sep 2026US 2026/0266547 A1Changzhou S.C Exact Equipment Co., Ltd.
- Inspection assembly for a furnace environment3 Sep 2026US 2026/0259007 A1Tallman Technologies Inc.
Most cited
By later US patents
- Movable core fast cool-down furnace577US 4,753,192 ABTU Engineering Corporation · 1988
- Heat treating apparatus with cooling fluid nozzles392US 5,097,890 ATel Sagami Limited · 1992
- Forced cooling apparatus for heat treatment apparatus370US 5,249,960 ATokyo Electron Sagami Limited · 1993
- Double wall fast cool-down furnace366US 4,802,441 ABTU Engineering Corporation · 1989
- Apparatus and method for submerged injection of a feed composition into a molten metal bath151US 5,443,572 AMolten Metal Technology, Inc. · 1995