F28F 1/34
And extending obliquely
Official title: and extending obliquely (F28F1/38 takes precedence)
F28F1/34 (And extending obliquely) appears on 297 US grants and 315 published applications in this corpus.
Search patents in F28F- Granted patents
- 297
- Published applications
- 315
- Assignees
- 227
- Inventors
- 818
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 6 |
| 2003 | 2 | 7 |
| 2004 | 7 | 6 |
| 2005 | 6 | 9 |
| 2006 | 4 | 7 |
| 2007 | 2 | 6 |
| 2008 | 5 | 9 |
| 2009 | 3 | 20 |
| 2010 | 4 | 16 |
| 2011 | 2 | 12 |
| 2012 | 7 | 17 |
| 2013 | 3 | 12 |
| 2014 | 7 | 21 |
| 2015 | 7 | 10 |
| 2016 | 6 | 16 |
| 2017 | 19 | 17 |
| 2018 | 14 | 18 |
| 2019 | 16 | 29 |
| 2020 | 16 | 14 |
| 2021 | 18 | 17 |
| 2022 | 12 | 13 |
| 2023 | 12 | 13 |
| 2024 | 4 | 7 |
| 2025 | 10 | 12 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Grey water heat recovery apparatus24 Feb 2026US 12,560,390 B2Consat AB
- Heat exchanger tubes and tube assembly configurations3 Feb 2026US 12,540,755 B2Rheem Manufacturing Company
- Heat exchanger, heat pump system and dishwasher27 Jan 2026US 12,535,274 B2Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.
- Heat exchange promotion member and heat exchanger20 Jan 2026US 12,529,529 B2Atago Manufacturing Co., Ltd.
- Pipe clamp assembly and heat exchanger having same23 Dec 2025US 12,504,099 B2Danfoss A/S
- Heat exchange promotion member and heat exchanger25 Jun 2026US 2026/0177329 A1Atago Manufacturing Co., Ltd.
- Fluid distributor and heat exchanger18 Dec 2025US 2025/0383167 A1Carrier Corporation
- Matrix for an Air-Oil Heat Exchanger of a Jet Engine2 Oct 2025US 2025/0305775 A1Safran Aero Boosters SA
- Heat utilization system and heat generating device14 Aug 2025US 2025/0257908 A1Clean Planet Inc.
- Absorption type chiller12 Jun 2025US 2025/0189179 A1
Most cited
By later US patents
- Devices using a medium having a high heat transfer rate103US 7,220,365 B2New Qu Energy Ltd. · 2007
- Heat exchanger with transpired, highly porous fins70US 6,378,605 B1Midwest Research Institute · 2002
- Heat transfer tubes and methods of fabrication thereof67US 5,697,430 AWolverine Tube, Inc. · 1997
- Integrated module for solid oxide fuel cell systems65US 6,749,958 B2Global Thermmelectric Inc. · 2004
- Method and apparatus for oxygenating and regulating the temperature of blood48US 4,138,288 AShiley Scientific, Inc. · 1979