F27D 17/18
For preheating solid materials
Official title: for preheating solid materials
F27D17/18 (For preheating solid materials) appears on 61 US grants and 82 published applications in this corpus.
Search patents in F27D- Granted patents
- 61
- Published applications
- 82
- Assignees
- 73
- Inventors
- 223
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 5 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 4 |
| 2012 | 1 | 5 |
| 2013 | 0 | 3 |
| 2014 | 3 | 7 |
| 2015 | 4 | 7 |
| 2016 | 4 | 3 |
| 2017 | 2 | 4 |
| 2018 | 6 | 5 |
| 2019 | 3 | 0 |
| 2020 | 3 | 3 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 3 | 4 |
| 2025 | 0 | 6 |
| 2026 | 1 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and device for producing cement clinker1 Sep 2026US 12,723,002 B2thyssenkrupp AG
- Method for reducing nitrogen oxides in strip heat treatment furnaces23 Jul 2024US 12,044,402 B2Andritz Technology and Asset Management GmbH
- High-temperature flue gas recovery apparatus for melting furnace26 Mar 2024US 11,940,216 B1Zhejiang Hailiang Co., Ltd.
- Apparatus and method for feeding and preheating a metal charge in a melting furnace9 Jan 2024US 11,867,462 B2Danieli & C. Officine Meccaniche SpA
- Efficient fiber manufacturing19 Sep 2023US 11,759,834 B2Plasma Tech Holdings, LLC
- Co2-free production of artificial pozzolans, in particular from clay10 Sep 2026US 2026/0265126 A1thyssenkrupp AG
- Parallel-flow regenerative shaft kiln and method of burning carbonate rock20 Aug 2026US 2026/0243516 A1Maerz Ofenbau AG
- Optimized conduction of heat in a plant for the thermal treatment of mineral substances6 Aug 2026US 2026/0227129 A1thyssenkrupp AG
- Method for calcining carbonated mineral stones in a parallel flow regenerative kiln and implemented kiln23 Jul 2026US 2026/0210631 A1S. A. Lhoist Recherche et Developpment
- Calcination apparatus and processes9 Jul 2026US 2026/0192270 A1The University of Adelaide
Most cited
By later US patents
- Use of high carbon coal ash72US 6,755,905 B2Lafarge Canada Inc. · 2004
- Furnace system for and method of melting and preheating metal20US 4,021,192 AReynolds Metals Company · 1977
- Method and apparatus for calcining fine grained material17US 4,541,245 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1985
- Cement clinker production comprising partial removal of a flow of rotary kiln exhaust gas containing harmful substances16US 7,296,994 B2KHD Humboldt Wedag GmbH · 2007
- Method and apparatus for recovering and reusing energy from a melting furnace14US 4,655,436 A1987