Y04S 20/244
The home appliances being or involving heating ventilating and air conditioning [hvac]
Official title: the home appliances being or involving heating ventilating and air conditioning [HVAC] units
Y04S20/244 (The home appliances being or involving heating ventilating and air conditioning [hvac]) appears on 297 US grants and 322 published applications in this corpus.
Search patents in Y04S- Granted patents
- 297
- Published applications
- 322
- Assignees
- 154
- Inventors
- 654
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 4 |
| 2004 | 2 | 6 |
| 2005 | 2 | 1 |
| 2006 | 3 | 4 |
| 2007 | 2 | 6 |
| 2008 | 0 | 6 |
| 2009 | 1 | 8 |
| 2010 | 2 | 37 |
| 2011 | 5 | 14 |
| 2012 | 6 | 23 |
| 2013 | 25 | 34 |
| 2014 | 19 | 21 |
| 2015 | 19 | 25 |
| 2016 | 18 | 24 |
| 2017 | 23 | 12 |
| 2018 | 24 | 22 |
| 2019 | 21 | 16 |
| 2020 | 20 | 13 |
| 2021 | 9 | 11 |
| 2022 | 12 | 8 |
| 2023 | 10 | 12 |
| 2024 | 11 | 8 |
| 2025 | 9 | 4 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heating systems9 Jun 2026US 12,650,244 B2Mixergy Limited
- Power control system, device, and information processing system19 May 2026US 12,633,965 B2Daikin Industries, Ltd.
- Central plant control system with asset allocation override7 Apr 2026US 12,597,772 B2Tyco Fire & Security GmbH
- System and method for controlling a heat pump20 Jan 2026US 12,529,502 B2Fronius International GmbH
- Smart energy hub20 Jan 2026US 12,531,762 B2Solaredge Technologies Ltd.
- System, Apparatus and Method for Efficient Use of Solar Photovoltaic Energy30 Apr 2026US 2026/0117991 A1Rheem Australia Pty Limited
- Hvac system with predictive control of waterside and airside hvac equipment6 Nov 2025US 2025/0343412 A1Tyco Fire & Security GmbH
- Load Control System Having Independently-Controlled Units Responsive To A Broadcast Controller2 Oct 2025US 2025/0309681 A1Lutron Technology Company LLC
- Electric power adjustment device28 Aug 2025US 2025/0271919 A1Hitachi, Ltd.
- Site management in an on-demand system24 Jul 2025US 2025/0240204 A1Salesforce, Inc.
Most cited
By later US patents
- Refrigeration monitor unit797US 6,453,687 B2Robertshaw Controls Company · 2002
- Energy management and home automation system750US 5,544,036 A1996
- Energy management and home automation system572US 5,761,083 A1998
- Appliance interface apparatus and automated residence management system512US 5,706,191 AGas Research Institute · 1998
- Apparatus and method for controlling distribution of electrical energy to a space conditioning load336US 5,462,225 AScientific-Atlanta, Inc. · 1995