F28F 2250/06
Derivation channels
Official title: Derivation channels, e.g. bypass
F28F2250/06 (Derivation channels) appears on 364 US grants and 471 published applications in this corpus.
Search patents in F28F- Granted patents
- 364
- Published applications
- 471
- Assignees
- 256
- Inventors
- 1,035
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 1 |
| 2002 | 0 | 2 |
| 2003 | 0 | 6 |
| 2004 | 7 | 5 |
| 2005 | 3 | 9 |
| 2006 | 6 | 14 |
| 2007 | 7 | 10 |
| 2008 | 2 | 16 |
| 2009 | 4 | 13 |
| 2010 | 7 | 11 |
| 2011 | 8 | 17 |
| 2012 | 6 | 20 |
| 2013 | 10 | 25 |
| 2014 | 14 | 28 |
| 2015 | 7 | 30 |
| 2016 | 22 | 35 |
| 2017 | 37 | 35 |
| 2018 | 23 | 36 |
| 2019 | 34 | 28 |
| 2020 | 28 | 32 |
| 2021 | 33 | 23 |
| 2022 | 29 | 21 |
| 2023 | 15 | 15 |
| 2024 | 7 | 17 |
| 2025 | 8 | 13 |
| 2026 | 10 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid management apparatus and thermal management system8 Sep 2026US 12,728,696 B2Zhejiang Sanhua Automotive Components Co., Ltd.
- Heat exchanger unit and method for fluid to passively bypassing a heat exchanger28 Jul 2026US 12,693,079 B2Bosal Flanders NV
- Deicing and icing prevention system for advance cycle condensers14 Jul 2026US 12,680,739 B2Rtx Corporation
- Steam heat exchanger2 Jun 2026US 12,644,648 B2
- Pool heater bypass systems and methods12 May 2026US 12,624,863 B2Rheem Manufacturing Company
- Oil temperature regulation assembly3 Sep 2026US 2026/0258739 A1
- Modular cooler and isolation valve assembly30 Jul 2026US 2026/0218999 A1Forum US, Inc.
- Heat exchanger device for an aircraft engine comprising a fuel-oil heat exchanger16 Jul 2026US 2026/0201835 A1Rolls-Royce Deutschland Ltd & Co KG
- Heat Exchanger with Improved Performance16 Jul 2026US 2026/0202089 A1Daikin Comfort Technologies Manufacturing, L.P.
- Heat Exchange Assembly for Hydrogenation of Diesel and Wax Oil, and Hydrogenation System9 Jul 2026US 2026/0193549 A1Zhenhai Petrochemical Jianan Engineering Co., Ltd.
Most cited
By later US patents
- By-pass values for heat exchanger80US 6,253,837 B1Long Manufacturing Ltd. · 2001
- System for controlling recirculated exhaust gas temperature in an internal combustion engine75US 5,732,688 ACummins Engine Company, Inc. · 1998
- Exhaust element with heat exchanger65US 6,141,961 AECIA-Equipments et Composants pour l'Industrie Automobile · 2000
- Vehicular use cooling apparatus58US 5,353,757 ANippondenso Co., Ltd. · 1994
- Air to air heat exchanger internal bypass53US 5,152,144 ACummins Engine Company, Inc. · 1992