F15B 21/0427
Heating
F15B21/0427 (Heating) appears on 116 US grants and 125 published applications in this corpus.
Search patents in F15B- Granted patents
- 116
- Published applications
- 125
- Assignees
- 76
- Inventors
- 320
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 2 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 1 | 5 |
| 2012 | 1 | 1 |
| 2013 | 2 | 10 |
| 2014 | 2 | 4 |
| 2015 | 9 | 6 |
| 2016 | 6 | 5 |
| 2017 | 3 | 5 |
| 2018 | 6 | 4 |
| 2019 | 2 | 11 |
| 2020 | 8 | 8 |
| 2021 | 11 | 8 |
| 2022 | 8 | 10 |
| 2023 | 7 | 10 |
| 2024 | 8 | 7 |
| 2025 | 12 | 14 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Temperature regulation system for vehicle hydraulic system25 Aug 2026US 12,716,434 B2Oshkosh Corporation
- Pneumatic system flow balancing architecture and method23 Jun 2026US 12,663,028 B2The Boeing Company
- Electrohydraulic actuating device having integrated electrical functional elements26 May 2026US 12,638,027 B2Emg Automation GmbH
- Working machine and control method therefor31 Mar 2026US 12,590,596 B2Kubota Corporation
- Hydraulic unit24 Mar 2026US 12,584,504 B2Daikin Industries, Ltd.
- Hydraulic System having a Conditioning Circuit25 Jun 2026US 2026/0177085 A1Robert Bosch GmbH
- Cooling nozzle vanes of a turbine engine18 Jun 2026US 2026/0168385 A1Rtx Corporation
- Compressed air supply unit, compressed air supply system, vehicle, and operating method4 Jun 2026US 2026/0153104 A1Zf Cv Systems Europe BV
- Working machine26 Mar 2026US 2026/0085495 A1Kubota Corporation
- Hydraulic actuator30 Oct 2025US 2025/0334134 A1Airbus Operations GmbH
Most cited
By later US patents
- Control apparatus and method for automatically controlling a hydraulic system for heavy construction equipment45US 5,251,440 ASamsung Heavy Industries Co., Ltd. · 1993
- Constant speed hydraulic motor18US 4,022,021 A1977
- Viscosity regulating valve15US 6,583,525 B2Hamilton Sundstrand Corporation · 2003
- Oil processor circuit14US 5,666,807 ACaterpillar Inc. · 1997
- Load sensing steering13US 4,354,351 ACaterpillar Tractor Co. · 1982