F27D 17/17
For preheating fluids
Official title: for preheating fluids, e.g. air or gases
F27D17/17 (For preheating fluids) appears on 109 US grants and 62 published applications in this corpus.
Search patents in F27D- Granted patents
- 109
- Published applications
- 62
- Assignees
- 96
- Inventors
- 253
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 3 | 2 |
| 2009 | 2 | 3 |
| 2010 | 3 | 5 |
| 2011 | 3 | 6 |
| 2012 | 2 | 3 |
| 2013 | 1 | 3 |
| 2014 | 4 | 3 |
| 2015 | 3 | 3 |
| 2016 | 2 | 1 |
| 2017 | 2 | 0 |
| 2018 | 2 | 2 |
| 2019 | 2 | 4 |
| 2020 | 2 | 1 |
| 2021 | 1 | 1 |
| 2022 | 3 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 4 |
| 2026 | 1 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cement clinker production system and cement clinker production method6 Jan 2026US 12,515,985 B2Taiheiyo Cement Corporation
- Waste thermal energy recovery device2 Dec 2025US 12,487,031 B2
- System and method to sustainable integrated wastewater treatment and air-cooling in a steelmaking plant14 Jan 2025US 12,195,361 B2Saudi Arabian Oil Company
- Device for preheating rod-like workpieces6 Dec 2022US 11,519,668 B2Extrutec GmbH
- Method for operating a batch furnace comprising the preheating of a fluid upstream of the furnace5 Jul 2022US 11,378,338 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Co2-free production of artificial pozzolans, in particular from clay10 Sep 2026US 2026/0265126 A1thyssenkrupp AG
- Sintering furnace23 Jul 2026US 2026/0210633 A1Seco Tools AB
- Sintering furnace11 Jun 2026US 2026/0160495 A1Illinois Tool Works Inc.
- Avoiding of emissions in the production of artificial pozzolans made of mineral material, in particular clays9 Apr 2026US 2026/0097990 A1thyssenkrupp AG
- Jet-type direct-fired preheating system26 Mar 2026US 2026/0085374 A1Baoshan Iron & Steel Co., Ltd.
Most cited
By later US patents
- System and method for producing solar grade silicon33US 7,572,425 B2General Electric Company · 2009
- Oxygen enriched combustion31US 4,761,132 ACombustion Tec, Inc. · 1988
- Thermochemical regenerative heat recovery process30US 6,113,874 APraxair Technology, Inc. · 2000
- Furnace system with reheated flue gas recirculation27US 4,358,268 A1982
- Method and plant for reheating flue gases behind a wet flue-gas desulfurization plant25US 4,543,110 AKraftwerk Union Aktiengesellschaft · 1985