F28D 19/041
With axial flow through the intermediate heat-transfer medium
Official title: {with axial flow through the intermediate heat-transfer medium}
F28D19/041 (With axial flow through the intermediate heat-transfer medium) appears on 284 US grants and 152 published applications in this corpus.
Search patents in F28D- Granted patents
- 284
- Published applications
- 152
- Assignees
- 161
- Inventors
- 433
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 12 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 14 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 2 |
| 2002 | 7 | 10 |
| 2003 | 8 | 3 |
| 2004 | 4 | 2 |
| 2005 | 2 | 1 |
| 2006 | 3 | 4 |
| 2007 | 2 | 1 |
| 2008 | 1 | 3 |
| 2009 | 2 | 3 |
| 2010 | 3 | 8 |
| 2011 | 2 | 9 |
| 2012 | 2 | 5 |
| 2013 | 1 | 15 |
| 2014 | 5 | 11 |
| 2015 | 3 | 5 |
| 2016 | 7 | 11 |
| 2017 | 9 | 9 |
| 2018 | 8 | 8 |
| 2019 | 8 | 9 |
| 2020 | 6 | 4 |
| 2021 | 7 | 10 |
| 2022 | 9 | 6 |
| 2023 | 5 | 2 |
| 2024 | 5 | 4 |
| 2025 | 3 | 6 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fixing device for reinforcing the joint of a rotary heat exchanger9 Jun 2026US 12,650,267 B2Klingenburg GmbH
- Metal rotary heat transfer assembly for a rotary air heat exchanger2 Jun 2026US 12,644,658 B2LOSCAR Spółka z ograniczon odpowiedzialności
- Adjustable rotor support and rotary heat exchanger with such support17 Feb 2026US 12,553,567 B2Heatex AB
- Decentralized supply and exhaust unit with heat recovery23 Sep 2025US 12,422,154 B2Limited Liability Company Ventilation Systems
- Dual-wheel HVAC system and method having improved dew point control4 Feb 2025US 12,215,887 B1NovelAire Technologies, L.L.C.
- Regenerative heat exchanger with low pressure drop for use in heat or energy recovery ventilation12 Feb 2026US 2026/0043578 A1
- Seals and flow restrictors for rotary machines4 Sep 2025US 2025/0277632 A1Howden Group Limited
- Decentralized supply and exhaust unit with heat recovery26 Jun 2025US 2025/0207795 A1Limited Liability Company Ventilation Systems
- A heat exchanger and a method of producing a matrix for a recuperative heat exchanger5 Jun 2025US 2025/0180301 A1Teknologian tutkimuskeskus VTT Oy
- A metal rotary heat transfer assembly for a rotary air heat exchanger29 May 2025US 2025/0172354 A1Blazej Kubiak Loscar
Most cited
By later US patents
- Total heat energy exchangers99US 4,093,435 AWing Industries, Inc. · 1978
- High efficiency sensible and latent heat exchange media with selected transfer for a total energy recovery wheel81US 4,769,053 ASemco Mfg., Inc. · 1988
- Ventilator system and method76US 7,231,967 B2Building Performance Equipment, Inc. · 2007
- Method and apparatus for applying brazing material to a metal honeycomb body71US 5,431,330 AEMITEC Gesellschaft fuer Emissionstechnologie mbH · 1995
- Regenerative heat and humidity exchanging apparatus57US 4,497,361 A1985