F01P 11/18
Concerning coolant pressure, coolant flow, or liquid-coolant level
Official title: concerning coolant pressure, coolant flow, or liquid-coolant level
F01P11/18 (Concerning coolant pressure, coolant flow, or liquid-coolant level) appears on 205 US grants and 138 published applications in this corpus.
Search patents in F01P- Granted patents
- 205
- Published applications
- 138
- Assignees
- 115
- Inventors
- 454
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 12 | 0 |
| 1987 | 16 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 2 | 1 |
| 2010 | 2 | 5 |
| 2011 | 5 | 6 |
| 2012 | 4 | 2 |
| 2013 | 0 | 6 |
| 2014 | 3 | 6 |
| 2015 | 3 | 10 |
| 2016 | 6 | 13 |
| 2017 | 11 | 8 |
| 2018 | 12 | 16 |
| 2019 | 10 | 15 |
| 2020 | 14 | 10 |
| 2021 | 18 | 7 |
| 2022 | 12 | 3 |
| 2023 | 3 | 6 |
| 2024 | 4 | 4 |
| 2025 | 3 | 4 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cooling system and method16 Jun 2026US 12,655,785 B2Transportation IP Holdings, LLC
- Active coolant monitoring and leak mitigation in vehicle cooling systems14 Apr 2026US 12,601,288 B2Volvo Truck Corporation
- Cooling loop, in particular for a motor vehicle, and sensor fitted on board the loop22 Jul 2025US 12,366,197 B2Valeo Systemes Thermiques
- Apparatus and methods related to coolant diverter valves15 Jul 2025US 12,359,608 B2Perkins Engines Company Limited
- Passive surge tank pressure augmentation3 Jun 2025US 12,320,289 B1GM Global Technology Operations LLC
- Adaptive control of a water pump in a marine propulsion system10 Sep 2026US 2026/0266210 A1Vision Marine Technologies
- Coolant expansion tank for fuel cell stack vehicle cooling system2 Jul 2026US 2026/0188711 A1Volvo Truck Corporation
- Degassing system for vehicle cooling system4 Jun 2026US 2026/0151716 A1Volvo Truck Corporation
- Leak detection system5 Mar 2026US 2026/0063062 A1Denso Corporation
- Coolant leak detection apparatus and method of detecting coolant leak using the same5 Mar 2026US 2026/0063499 A1Samsung SDI.Co., Ltd.
Most cited
By later US patents
- Engine protection system96US 5,070,832 ACummins Engine Company, Inc. · 1991
- Fluent material level control system43US 4,265,262 A1981
- Motor vehicle cooling system status indicator36US 5,656,771 ABesmarguage CC. · 1997
- Intercooler for supercharged internal combustion engine35US 4,598,687 ANissan Motor Co., Ltd. · 1986
- Liquid level detecting and indicating system for vehicle24US 3,939,470 ANippondenso Co., Ltd. · 1976