F24F 11/38
Failure diagnosis
F24F11/38 (Failure diagnosis) appears on 679 US grants and 865 published applications in this corpus.
Search patents in F24F- Granted patents
- 679
- Published applications
- 865
- Assignees
- 265
- Inventors
- 1,737
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 7 |
| 2004 | 6 | 6 |
| 2005 | 4 | 11 |
| 2006 | 6 | 17 |
| 2007 | 10 | 14 |
| 2008 | 8 | 9 |
| 2009 | 4 | 8 |
| 2010 | 10 | 22 |
| 2011 | 9 | 10 |
| 2012 | 12 | 18 |
| 2013 | 9 | 19 |
| 2014 | 8 | 29 |
| 2015 | 17 | 43 |
| 2016 | 20 | 48 |
| 2017 | 25 | 47 |
| 2018 | 38 | 39 |
| 2019 | 51 | 75 |
| 2020 | 64 | 53 |
| 2021 | 52 | 92 |
| 2022 | 50 | 67 |
| 2023 | 75 | 61 |
| 2024 | 54 | 72 |
| 2025 | 54 | 55 |
| 2026 | 27 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air conditioner29 Sep 2026US 12,747,883 B2LG Electronics Inc.
- UV disinfectant light system15 Sep 2026US 12,736,239 B2DSM&T Company, Inc.
- HVAC airflow measurement with in-situ calibration18 Aug 2026US 12,710,185 B2The Energy Conservatory, Inc.
- Systems and methods for managing temperature control in an indoor environment14 Jul 2026US 12,680,720 B2Carrier Corporation
- Systems and methods for active fault detection in HVAC systems7 Jul 2026US 12,674,595 B2Carrier Corporation
- System and Method for predicting short cycling of HVAC systems and generating alerts for remediation24 Sep 2026US 2026/0287194 A1Lennox Industries Inc.
- Systems and methods for monitoring the condition of an air filter and of an hvac system24 Sep 2026US 2026/0288101 A13M Innovative Properties Company
- Schedule management system, schedule management method, schedule management device, and recording medium27 Aug 2026US 2026/0251331 A1Mitsubishi Electric Corporation
- Air-conditioning apparatus27 Aug 2026US 2026/0251332 A1Mitsubishi Electric Corporation
- Operation terminal, program, and failed component identification system6 Aug 2026US 2026/0227083 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- HVAC remote monitoring system530US 6,385,510 B12002
- Controller customization management system338US 7,222,800 B2Honeywell International Inc. · 2007
- Systems and methods for controlling energy use in a building management system using energy budgets329US 8,843,238 B2Johnson Controls Technology Company · 2014
- Diagnostic system for use in an environment control network306US 5,446,677 AJohnson Service Company · 1995
- Air conditioning system277US 4,948,040 AMitsubishi Denki Kabushiki Kaisha · 1990