F27B 1/22
Arrangements of heat-exchange apparatus
F27B1/22 (Arrangements of heat-exchange apparatus) appears on 24 US grants and 29 published applications in this corpus.
Search patents in F27B- Granted patents
- 24
- Published applications
- 29
- Assignees
- 32
- Inventors
- 68
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 4 | 2 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 6 |
| 2025 | 2 | 5 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and process for production of burnt lime or dolomite8 Sep 2026US 12,729,156 B2Fels-Werke GmbH
- Device for producing supplementary cementitious material4 Nov 2025US 12,459,861 B2Cemgreen APS
- Method for calcining mineral rock in a regenerative parallel-flow vertical shaft furnace and furnace used1 Jul 2025US 12,344,556 B2S. A. Lhoist Recherche et Developpement
- High temperature sintering furnace systems and methods19 Nov 2024US 12,146,711 B2University of Maryland, College Park
- Method and device for producing an expanded granulate7 Apr 2020US 10,611,686 B2Binder GmbH
- Plant and method for burning carbonate rock24 Sep 2026US 2026/0285749 A1Scheuch Management Holding GmbH
- Systems and methods for direct reduction of iron ore24 Sep 2026US 2026/0287255 A1Uchicago Argonne, LLC
- Parallel-flow regenerative shaft kiln and method of burning carbonate rock20 Aug 2026US 2026/0243516 A1Maerz Ofenbau AG
- Kiln and method for burning carbonate rock6 Aug 2026US 2026/0225953 A1Maerz Ofenbau 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
Most cited
By later US patents
- Shaft furnace for production of iron carbide16US 5,618,032 AMidrex International B.V. Rotterdam, Zurich Branch · 1997
- Waste heat recovery apparatus14US 4,340,207 ADravo Corporation · 1982
- Waste heat recovery process and apparatus11US 4,257,579 AAmerican Hydrotherm Corporation · 1981
- Iron carbide production in shaft furnace11US 5,437,708 AMidrex International B.V. Rotterdam, Zurich Branch · 1995
- Calcining kettle having multi-pass heating system8US 4,161,390 AUnited States Gypsum Company · 1979