F25B 2313/029
Control issues
F25B2313/029 (Control issues) appears on 420 US grants and 479 published applications in this corpus.
Search patents in F25B- Granted patents
- 420
- Published applications
- 479
- Assignees
- 110
- Inventors
- 922
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 2 |
| 2004 | 4 | 6 |
| 2005 | 4 | 5 |
| 2006 | 1 | 5 |
| 2007 | 6 | 3 |
| 2008 | 1 | 6 |
| 2009 | 3 | 4 |
| 2010 | 3 | 6 |
| 2011 | 5 | 6 |
| 2012 | 0 | 4 |
| 2013 | 2 | 13 |
| 2014 | 4 | 19 |
| 2015 | 8 | 38 |
| 2016 | 13 | 26 |
| 2017 | 29 | 27 |
| 2018 | 28 | 26 |
| 2019 | 32 | 42 |
| 2020 | 35 | 41 |
| 2021 | 33 | 54 |
| 2022 | 44 | 45 |
| 2023 | 34 | 40 |
| 2024 | 44 | 28 |
| 2025 | 23 | 20 |
| 2026 | 9 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air conditioner1 Sep 2026US 12,723,784 B2LG Electronics Inc.
- Operation control system, operation control apparatus, and operation control method25 Aug 2026US 12,716,601 B2Daikin Industries, Ltd.
- Variable refrigerant flow system and control method18 Aug 2026US 12,710,207 B2Guangdong Carrier Hvac Co., Ltd.
- Heat exchanger and heat pump device19 May 2026US 12,631,374 B2Daikin Industries, Ltd.
- Air conditioner5 May 2026US 12,618,570 B2Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd.
- Air conditioner9 Jul 2026US 2026/0194275 A1LG Electronics Inc.
- Air conditioner for removing foreign substances from indoor heat exchanger and method of operating the same25 Jun 2026US 2026/0177302 A1LG Electronics Inc.
- Control scheme for automatic fan mode for use with variable refrigerant flow systems18 Jun 2026US 2026/0168717 A1Lennox Industries Inc.
- Hybrid top/side discharge heat pump with non-stop heating under frosting condition4 Jun 2026US 2026/0153276 A1Midea Group Co., Ltd.
- Hvac with back-pressure limiting expansion device12 Mar 2026US 2026/0071787 A1Carrier Corporation
Most cited
By later US patents
- Heating and cooling system with variable capacity compressor154US 5,628,201 ACopeland Corporation · 1997
- Air conditioning system with variable condenser reheat for enhanced dehumidification125US 6,826,921 B1Lennox Industries Inc. · 2004
- Geothermal heat pump system116US 5,758,514 AEnvirotherm Heating & Cooling Systems, Inc. · 1998
- Diagnostics for a heating and cooling system113US 5,689,963 ACopeland Corporation · 1997
- Diagnostics for a heating and cooling system103US 5,623,834 ACopeland Corporation · 1997