Y04S 20/221
General power management systems
Y04S20/221 (General power management systems) appears on 313 US grants and 400 published applications in this corpus.
Search patents in Y04S- Granted patents
- 313
- Published applications
- 400
- Assignees
- 207
- Inventors
- 757
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 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 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 6 |
| 2004 | 1 | 11 |
| 2005 | 5 | 4 |
| 2006 | 6 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 3 |
| 2009 | 4 | 8 |
| 2010 | 2 | 18 |
| 2011 | 3 | 15 |
| 2012 | 9 | 36 |
| 2013 | 13 | 39 |
| 2014 | 20 | 46 |
| 2015 | 26 | 27 |
| 2016 | 30 | 39 |
| 2017 | 26 | 31 |
| 2018 | 29 | 23 |
| 2019 | 35 | 26 |
| 2020 | 24 | 23 |
| 2021 | 24 | 10 |
| 2022 | 14 | 6 |
| 2023 | 12 | 13 |
| 2024 | 9 | 3 |
| 2025 | 7 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power control system, device, and information processing system19 May 2026US 12,633,965 B2Daikin Industries, Ltd.
- Power control system and heat pump system20 Jan 2026US 12,531,416 B2Daikin Industries, Ltd.
- Sensor-based energy management enclosure and distributed energy resource management based on sensor data18 Nov 2025US 12,474,382 B2Apparent Labs, LLC
- System and method for a charging station12 Aug 2025US 12,386,376 B2Transportation IP Holdings, LLC
- Optimal communication architecture for smart distribution power grid5 Aug 2025US 12,380,519 B2Amrita Vishwa Vidyapeetham
- Monitoring and diagnosing complex distributed technical systems19 Mar 2026US 2026/0079784 A1Kraken Technologies Limited
- System and method for a charging station5 Mar 2026US 2026/0064148 A1Transportation IP Holdings, LLC
- Communicating with and Controlling Load Control Systems22 Jan 2026US 2026/0023358 A1Lutron Technology Company LLC
- Site management in an on-demand system24 Jul 2025US 2025/0240204 A1Salesforce, Inc.
- Highly flexible, electrical distriubtion grid edge energy manager and router5 Jun 2025US 2025/0183709 A1Gridbridge, Inc.
Most cited
By later US patents
- Refrigeration monitor unit797US 6,453,687 B2Robertshaw Controls Company · 2002
- Smart building manager322US 8,600,556 B2Johnson Controls Technology Company · 2013
- Automated fault detection and diagnostics in a building management system264US 8,731,724 B2Johnson Controls Technology Company · 2014
- Wireless communication system for air distribution system257US 5,390,206 AAmerican Standard Inc. · 1995
- Integrated protection, monitoring, and control system252US 7,747,356 B2General Electric Company · 2010