F28F 9/22
Arrangements for directing heat-exchange media into successive compartments
Official title: Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
F28F9/22 (Arrangements for directing heat-exchange media into successive compartments) appears on 710 US grants and 840 published applications in this corpus.
Search patents in F28F- Granted patents
- 710
- Published applications
- 840
- Assignees
- 508
- Inventors
- 1,966
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 10 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 17 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 10 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 3 |
| 2002 | 6 | 7 |
| 2003 | 7 | 12 |
| 2004 | 5 | 11 |
| 2005 | 7 | 15 |
| 2006 | 8 | 17 |
| 2007 | 10 | 20 |
| 2008 | 8 | 24 |
| 2009 | 5 | 23 |
| 2010 | 15 | 34 |
| 2011 | 11 | 30 |
| 2012 | 11 | 27 |
| 2013 | 15 | 29 |
| 2014 | 18 | 38 |
| 2015 | 16 | 40 |
| 2016 | 24 | 46 |
| 2017 | 34 | 64 |
| 2018 | 36 | 45 |
| 2019 | 45 | 43 |
| 2020 | 43 | 60 |
| 2021 | 44 | 54 |
| 2022 | 40 | 48 |
| 2023 | 39 | 41 |
| 2024 | 33 | 41 |
| 2025 | 31 | 37 |
| 2026 | 21 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat generation cell, heat generation device, and heat utilization system29 Sep 2026US 12,747,893 B2Clean Planet Inc.
- Shell-and-tube heat exchanger, method of exchanging heat and use of heat exchanger22 Sep 2026US 12,741,261 B2Technip Energies France
- Continuously variable transmission22 Sep 2026US 12,742,495 B2Polaris Industries Inc.
- Heat exchanger with tube bundle comprising at least two sections15 Sep 2026US 12,736,288 B2Valmex S.P.A.
- Falling film evaporator8 Sep 2026US 12,729,891 B2Tyco Fire & Security GmbH
- Sheet membrane apparatus8 Oct 2026US 2026/0309425 A1Baltimore Aircoil Company, Inc.
- Cooking system and heat exchanger with combustion chamber17 Sep 2026US 2026/0271942 A1
- Condenser and dishwasher including the same27 Aug 2026US 2026/0248357 A1LG Electronics Inc.
- Heat exchanger, heat dissipation module, and compute device27 Aug 2026US 2026/0251398 A1Huawei Technologies Co., Ltd.
- Cooling systems, controllers and methods27 Aug 2026US 2026/0255553 A1CoolIT Systems, Inc.
Most cited
By later US patents
- Treatment of heat exchangers to reduce corrosion and by-product reactions83US 5,141,049 AThe Badger Company, Inc. · 1992
- Method and apparatus for preferential cooling75US 5,544,700 AGeneral Electric Company · 1996
- Catalytic vapor phase oxidation reactor apparatus62US 4,256,783 ANippon Skokubei Kagaku Kogyo Co., Ltd. · 1981
- Process for catalytic vapor phase oxidation58US 4,203,906 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1980
- Two pass shell and tube heat exchanger with return annular distributor56US 5,203,405 APhillips Petroleum Company · 1993