F24F 11/85
Using variable-flow pumps
Official title: using variable-flow pumps
F24F11/85 (Using variable-flow pumps) appears on 256 US grants and 285 published applications in this corpus.
Search patents in F24F- Granted patents
- 256
- Published applications
- 285
- Assignees
- 123
- Inventors
- 623
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 3 |
| 2003 | 6 | 5 |
| 2004 | 3 | 7 |
| 2005 | 4 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 0 | 8 |
| 2012 | 1 | 10 |
| 2013 | 2 | 9 |
| 2014 | 5 | 19 |
| 2015 | 7 | 26 |
| 2016 | 9 | 28 |
| 2017 | 26 | 34 |
| 2018 | 30 | 20 |
| 2019 | 40 | 25 |
| 2020 | 21 | 18 |
| 2021 | 20 | 16 |
| 2022 | 10 | 5 |
| 2023 | 15 | 14 |
| 2024 | 9 | 11 |
| 2025 | 9 | 11 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method, controller and system of controlling thermal power transfer through a thermal energy exchanger6 Oct 2026US 12,753,941 B2Belimo Holding AG
- HVAC system using reheat from alternative heat source15 Sep 2026US 12,736,236 B2Tyco Fire & Security GmbH
- System and methods utilizing fluid coolers and chillers to perform in-series heat rejection and trim cooling25 Aug 2026US 12,716,598 B2Inertech IP LLC
- Method for controlling variable refrigerant flow air conditioner, variable refrigerant flow air conditioner, and storage medium30 Jun 2026US 12,669,256 B2Gd Midea Air-Conditioning Equipment Co., Ltd.
- Chiller system and air-conditioning apparatus including chiller system3 Feb 2026US 12,540,750 B2Mitsubishi Electric Corporation
- Control method and control device, and air conditioner for delayed shutdown of indoor air conditioning fans4 Jun 2026US 2026/0153257 A1Guangdong Carrier Hvac Co., Ltd.
- Heat medium circulation device23 Apr 2026US 2026/0110451 A1Carrier Japan Corporation
- Control method for a hydronic system2 Apr 2026US 2026/0092716 A1Grundfos Holding A/S
- Air conditioning apparatus12 Mar 2026US 2026/0071774 A1Fujitsu General Limited
- Pump for a zoned heating or cooling system and method for controlling a pump19 Feb 2026US 2026/0049738 A1
Most cited
By later US patents
- Heating and cooling system with variable capacity compressor154US 5,628,201 ACopeland Corporation · 1997
- Humidity control for variable speed air conditioner140US 5,062,276 AElectric Power Research Institute, Inc. · 1991
- Enthalpy based thermal comfort controller90US 5,675,979 AHoneywell Inc. · 1997
- Water generating machine77US 6,490,879 B1Assist International Marketing, Inc. · 2002
- Application specific integrated circuit for controlling power devices for commutating a motor based on the back emf of motor73US 6,215,261 B1General Electric Company · 2001