F28F 9/0131
Formed by plates
Official title: {formed by plates (F28F9/0138 takes precedence)}
F28F9/0131 (Formed by plates) appears on 226 US grants and 243 published applications in this corpus.
Search patents in F28F- Granted patents
- 226
- Published applications
- 243
- Assignees
- 182
- Inventors
- 574
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 1 |
| 2002 | 4 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 4 |
| 2005 | 1 | 3 |
| 2006 | 2 | 4 |
| 2007 | 2 | 3 |
| 2008 | 2 | 6 |
| 2009 | 2 | 4 |
| 2010 | 1 | 6 |
| 2011 | 1 | 6 |
| 2012 | 2 | 9 |
| 2013 | 4 | 12 |
| 2014 | 4 | 8 |
| 2015 | 3 | 11 |
| 2016 | 8 | 18 |
| 2017 | 12 | 19 |
| 2018 | 11 | 19 |
| 2019 | 15 | 12 |
| 2020 | 19 | 15 |
| 2021 | 20 | 20 |
| 2022 | 16 | 19 |
| 2023 | 13 | 14 |
| 2024 | 17 | 8 |
| 2025 | 8 | 9 |
| 2026 | 2 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tubular membrane heat exchanger12 May 2026US 12,624,897 B2Baltimore Aircoil Company, Inc.
- Microchannel heat exchanger tube supported bracket10 Feb 2026US 12,546,538 B2Carrier Corporation
- Heat pipe unit and waste heat recovery boiler including same23 Sep 2025US 12,422,193 B2Doosan Enerbility Co., Ltd.
- Folded coil tube spacer16 Sep 2025US 12,416,449 B2Mahle International GmbH
- Heat exchanger for HVAC system26 Aug 2025US 12,398,917 B2Johnson Controls Light Commercial IP GmbH
- Heat exchanger for an hvac&r system1 Oct 2026US 2026/0298557 A1Tyco Fire & Security GmbH
- Multi-gusset mount for heat exchanger1 Oct 2026US 2026/0298558 A1Hamilton Sundstrand Corporation
- Outdoor unit and air conditioner comprising said outdoor unit24 Sep 2026US 2026/0287184 A1Fujitsu General Limited
- Heat exchanger20 Aug 2026US 2026/0243523 A1Sanden Corporation
- Apparatus, System and Method for Heat Exchanger End Plate Erosion Resistance13 Aug 2026US 2026/0235371 A1Westermeyer Industries Inc.
Most cited
By later US patents
- Heat exchanger with oblong grommetted tubes and locating plates91US 5,538,079 A1996
- Apparatus for cooling EGR gas62US 5,915,472 AUsui Kokusai Sangyo Kaisha Limited · 1999
- Exhaust gas treatment method and apparatus47US 4,487,139 AHeat Exchanger Industries, Inc. · 1984
- Exhaust gas treatment method and apparatus44US 4,557,202 AHeat Exchanger Industries, Inc. · 1985
- Circuit assembly for once-through steam generators41US 6,019,070 A2000