Y04S 20/222
Demand response systems
Official title: Demand response systems, e.g. load shedding, peak shaving
Y04S20/222 (Demand response systems) appears on 3,246 US grants and 3,938 published applications in this corpus.
Search patents in Y04S- Granted patents
- 3,246
- Published applications
- 3,938
- Assignees
- 1,354
- Inventors
- 6,349
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 10 | 0 |
| 1978 | 14 | 0 |
| 1979 | 15 | 0 |
| 1980 | 10 | 0 |
| 1981 | 10 | 0 |
| 1982 | 22 | 0 |
| 1983 | 15 | 0 |
| 1984 | 16 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 13 | 0 |
| 1996 | 14 | 0 |
| 1997 | 16 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 3 |
| 2002 | 6 | 19 |
| 2003 | 16 | 51 |
| 2004 | 17 | 65 |
| 2005 | 22 | 37 |
| 2006 | 45 | 32 |
| 2007 | 30 | 46 |
| 2008 | 36 | 45 |
| 2009 | 31 | 73 |
| 2010 | 31 | 139 |
| 2011 | 41 | 178 |
| 2012 | 94 | 307 |
| 2013 | 141 | 357 |
| 2014 | 179 | 309 |
| 2015 | 193 | 245 |
| 2016 | 200 | 291 |
| 2017 | 239 | 253 |
| 2018 | 237 | 275 |
| 2019 | 299 | 277 |
| 2020 | 251 | 295 |
| 2021 | 247 | 210 |
| 2022 | 151 | 146 |
| 2023 | 193 | 129 |
| 2024 | 153 | 75 |
| 2025 | 92 | 51 |
| 2026 | 41 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for actively managing electric power supply for an electric power grid29 Sep 2026US 12,748,450 B2Causam Enterprises, Inc.
- System and methods for actively managing electric power over an electric power grid29 Sep 2026US 12,748,451 B2Causam Enterprises, Inc.
- Strategic rationing of vehicle energy for supporting household loads during power outages22 Sep 2026US 12,744,388 B2Ford Global Technologies, LLC
- Operation control system, operation control apparatus, and operation control method25 Aug 2026US 12,716,601 B2Daikin Industries, Ltd.
- System for configuring demand response for energy grid assets25 Aug 2026US 12,717,294 B2Centrica Business Solutions Belgium N.V.
- Plug-in energy storage batteries and networked plug-in energy storage batteries24 Sep 2026US 2026/0291242 A1
- Scalable rules-based object-oriented power system control scheme27 Aug 2026US 2026/0254245 A1Cummins Power Generation Inc.
- Power control device20 Aug 2026US 2026/0245153 A1Systemex Energies Inc.
- Proactive intelligent load shedding13 Aug 2026US 2026/0238008 A1Operation Technology, Inc.
- Battery management system for battery powered equipment13 Aug 2026US 2026/0238033 A1Briggs & Stratton Corporation
Most cited
By later US patents
- Smart electric vehicle (EV) charging and grid integration apparatus and methods998US 9,026,347 B2The Regents of the University of California · 2015
- Engery management and building automation system884US 5,572,438 ATECO Energy Management Services · 1996
- Energy management and home automation system750US 5,544,036 A1996
- System and method for monitoring and controlling energy usage599US 6,633,823 B2Nxegen, Inc. · 2003
- Energy management and home automation system572US 5,761,083 A1998