Y02B 30/70
Efficient control or regulation technologies
Official title: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Y02B30/70 (Efficient control or regulation technologies) appears on 6,067 US grants and 6,558 published applications in this corpus.
Search patents in Y02B- Granted patents
- 6,067
- Published applications
- 6,558
- Assignees
- 2,024
- Inventors
- 11,690
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 20 | 0 |
| 1978 | 24 | 0 |
| 1979 | 19 | 0 |
| 1980 | 15 | 0 |
| 1981 | 24 | 0 |
| 1982 | 21 | 0 |
| 1983 | 22 | 0 |
| 1984 | 31 | 0 |
| 1985 | 29 | 0 |
| 1986 | 31 | 0 |
| 1987 | 35 | 0 |
| 1988 | 36 | 0 |
| 1989 | 41 | 0 |
| 1990 | 47 | 0 |
| 1991 | 46 | 0 |
| 1992 | 53 | 0 |
| 1993 | 57 | 0 |
| 1994 | 50 | 0 |
| 1995 | 64 | 0 |
| 1996 | 64 | 0 |
| 1997 | 52 | 0 |
| 1998 | 65 | 0 |
| 1999 | 60 | 0 |
| 2000 | 65 | 0 |
| 2001 | 78 | 17 |
| 2002 | 102 | 75 |
| 2003 | 91 | 122 |
| 2004 | 97 | 138 |
| 2005 | 80 | 162 |
| 2006 | 73 | 151 |
| 2007 | 89 | 169 |
| 2008 | 69 | 157 |
| 2009 | 71 | 182 |
| 2010 | 102 | 222 |
| 2011 | 101 | 189 |
| 2012 | 142 | 231 |
| 2013 | 136 | 234 |
| 2014 | 142 | 287 |
| 2015 | 170 | 368 |
| 2016 | 187 | 339 |
| 2017 | 303 | 409 |
| 2018 | 322 | 409 |
| 2019 | 401 | 447 |
| 2020 | 418 | 495 |
| 2021 | 378 | 513 |
| 2022 | 396 | 452 |
| 2023 | 396 | 402 |
| 2024 | 379 | 220 |
| 2025 | 260 | 113 |
| 2026 | 91 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Humidifier29 Sep 2026US 12,747,878 B2LG Electronics Inc.
- HVAC control system with cost target optimization25 Aug 2026US 12,716,606 B2Tyco Fire & Security GmbH
- Air conditioner control method, air conditioner, storage medium and device25 Aug 2026US 12,716,608 B2Gd Midea Air-Conditioning Equipment Co., Ltd.
- Valve needle and electronic expansion valve having valve needle18 Aug 2026US 12,710,098 B2Zhejiang Dunan Artificial Environment Co., Ltd.
- Thermostat with demand controlled indoor air quality18 Aug 2026US 12,710,192 B2Tyco Fire & Security GmbH
- Two-stage compression centrifugal unit and middle air supplementing control method therefor, and heating and ventilation device20 Aug 2026US 2026/0243470 A1Chongqing Midea General Refrigeration Equipment Co., Ltd.
- Electronic expansion valve13 Aug 2026US 2026/0235209 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- System and method for air sanitization13 Aug 2026US 2026/0235315 A1Research Products Corporation
- Electronic expansion valve6 Aug 2026US 2026/0226995 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Electronic expansion valve6 Aug 2026US 2026/0227105 A1Zhejiang Dunan Artificial Environment Co., Ltd.
Most cited
By later US patents
- Method and apparatus for quiet variable motor speed control1,483US 7,330,004 B2Lutron Electronics Co., Inc. · 2008
- Refrigeration monitor unit797US 6,453,687 B2Robertshaw Controls Company · 2002
- Home cleaning robot729US 6,459,955 B1The Procter & Gamble Company · 2002
- Apparatus and method for automatic climate control456US 5,395,042 ASmart Systems International · 1995
- Environmental sensor device with alarms333US 9,280,884 B1Oberon, Inc. · 2016