F01P 11/02
Liquid-coolant filling, overflow, venting, or draining devices
Official title: Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20)
F01P11/02 (Liquid-coolant filling, overflow, venting, or draining devices) appears on 824 US grants and 631 published applications in this corpus.
Search patents in F01P- Granted patents
- 824
- Published applications
- 631
- Assignees
- 343
- Inventors
- 1,661
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 13 | 0 |
| 1986 | 10 | 0 |
| 1987 | 16 | 0 |
| 1988 | 22 | 0 |
| 1989 | 8 | 0 |
| 1990 | 9 | 0 |
| 1991 | 8 | 0 |
| 1992 | 17 | 0 |
| 1993 | 13 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 9 | 0 |
| 1997 | 15 | 0 |
| 1998 | 17 | 0 |
| 1999 | 13 | 0 |
| 2000 | 27 | 0 |
| 2001 | 23 | 4 |
| 2002 | 23 | 22 |
| 2003 | 32 | 30 |
| 2004 | 24 | 24 |
| 2005 | 21 | 23 |
| 2006 | 20 | 21 |
| 2007 | 12 | 16 |
| 2008 | 10 | 17 |
| 2009 | 7 | 13 |
| 2010 | 14 | 21 |
| 2011 | 13 | 13 |
| 2012 | 12 | 16 |
| 2013 | 10 | 18 |
| 2014 | 14 | 11 |
| 2015 | 14 | 23 |
| 2016 | 15 | 26 |
| 2017 | 16 | 36 |
| 2018 | 35 | 30 |
| 2019 | 30 | 36 |
| 2020 | 33 | 30 |
| 2021 | 31 | 23 |
| 2022 | 32 | 40 |
| 2023 | 30 | 36 |
| 2024 | 25 | 36 |
| 2025 | 31 | 35 |
| 2026 | 20 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid tank for a liquid system of a vehicle, liquid system, and vehicle6 Oct 2026US 12,752,620 B2Hella GmbH & Co. KGaA
- Transportation vehicle22 Sep 2026US 12,742,411 B2Hitachi Construction Machinery Co., Ltd.
- System and method for deaeration7 Jul 2026US 12,673,275 B2Donaldson Company, Inc.
- Isolation device for isolating leaked liquid coolant and electronic equipment including isolation device7 Jul 2026US 12,677,394 B2Fulian Precision Electronics (Tianjin) Co., LTD.
- Integrated cooling module30 Jun 2026US 12,668,099 B2Hanon Systems
- Reservoir tank and coolant module including the same8 Oct 2026US 2026/0309070 A1Hanon Systems
- System and method for deaeration1 Oct 2026US 2026/0295469 A1Donaldson Company, Inc.
- A coolant system for a vehicle1 Oct 2026US 2026/0298128 A1Volvo Truck Corporation
- Coolant module for vehicle1 Oct 2026US 2026/0298131 A1Hanon Systems
- Deaeration tank3 Sep 2026US 2026/0257152 A1Modine Manufacturing Company
Most cited
By later US patents
- Two-phase heat-transfer systems82US 6,866,092 B12005
- Cooling system for work vehicle72US 6,129,056 ACase Corporation · 2000
- Compact heat exchanger-ventilation unit for a vehicle55US 5,234,051 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1993
- Combined air box, coolant reservoir and oil tank for snowmobiles55US 6,247,442 B1Polaris Industries Inc. · 2001
- Marine engine cooling system with a check valve to facilitate draining52US 6,379,201 B1Brunswick Corporation · 2002