F01P 3/20
Cooling circuits not specific to a single part of engine or machine
Official title: Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence)
F01P3/20 (Cooling circuits not specific to a single part of engine or machine) appears on 1,539 US grants and 1,240 published applications in this corpus.
Search patents in F01P- Granted patents
- 1,539
- Published applications
- 1,240
- Assignees
- 462
- Inventors
- 3,110
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 9 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 17 | 0 |
| 1986 | 15 | 0 |
| 1987 | 14 | 0 |
| 1988 | 19 | 0 |
| 1989 | 18 | 0 |
| 1990 | 24 | 0 |
| 1991 | 27 | 0 |
| 1992 | 21 | 0 |
| 1993 | 14 | 0 |
| 1994 | 13 | 0 |
| 1995 | 18 | 0 |
| 1996 | 17 | 0 |
| 1997 | 26 | 0 |
| 1998 | 29 | 0 |
| 1999 | 28 | 0 |
| 2000 | 40 | 0 |
| 2001 | 30 | 19 |
| 2002 | 33 | 35 |
| 2003 | 37 | 23 |
| 2004 | 27 | 27 |
| 2005 | 21 | 21 |
| 2006 | 32 | 25 |
| 2007 | 15 | 26 |
| 2008 | 19 | 10 |
| 2009 | 19 | 15 |
| 2010 | 11 | 10 |
| 2011 | 11 | 17 |
| 2012 | 10 | 21 |
| 2013 | 12 | 27 |
| 2014 | 22 | 39 |
| 2015 | 32 | 47 |
| 2016 | 38 | 86 |
| 2017 | 57 | 112 |
| 2018 | 85 | 107 |
| 2019 | 111 | 136 |
| 2020 | 119 | 83 |
| 2021 | 105 | 76 |
| 2022 | 96 | 79 |
| 2023 | 73 | 79 |
| 2024 | 52 | 51 |
| 2025 | 52 | 32 |
| 2026 | 29 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Valve device29 Sep 2026US 12,747,797 B2Denso Corporation
- Coolant tank with outer component interfaces and outer channels for conducting coolant22 Sep 2026US 12,742,409 B2Hella GmbH & Co. KGaA
- Marine propulsion device22 Sep 2026US 12,742,410 B2Yamaha Hatsudoki Kabushiki Kaisha
- Coolant circuit for a self-propelled working machine comprising multiple electric drive components1 Sep 2026US 12,722,474 B2Manitowoc Crane Group France SAS
- Heat management system and heat management method of an internal combustion engine1 Sep 2026US 12,723,535 B2Ino8 Pty Ltd.
- Coolant module8 Oct 2026US 2026/0309068 A1Hanon Systems
- Fluid distributor valve with temperature sensor1 Oct 2026US 2026/0298127 A1Stoneridge Control Devices, Inc.
- A coolant system for a vehicle1 Oct 2026US 2026/0298128 A1Volvo Truck Corporation
- Lubrication oil warm-up for a fluid pump24 Sep 2026US 2026/0286880 A1Caterpillar Inc.
- Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods17 Sep 2026US 2026/0275845 A1BJ Energy Solutions, LLC
Most cited
By later US patents
- Hybrid electric vehicle regenerative braking energy recovery system317US 5,291,960 AFord Motor Company · 1994
- Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods133US 11,236,739 B2BJ Energy Solutions, LLC · 2022
- Hybird vehicle cooling system127US 5,255,733 AFord Motor Company · 1993
- Thermal management systems and methods118US 7,147,071 B2Battelle Energy Alliance, LLC · 2006
- Liquid cooled shock absorber116US 4,616,810 A1986