H02P 27/045
Whereby the speed is regulated by measuring the motor speed and comparing
Official title: {whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value}
H02P27/045 (Whereby the speed is regulated by measuring the motor speed and comparing) appears on 77 US grants and 59 published applications in this corpus.
Search patents in H02P- Granted patents
- 77
- Published applications
- 59
- Assignees
- 56
- Inventors
- 182
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 4 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 5 | 1 |
| 2013 | 1 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 4 |
| 2019 | 3 | 3 |
| 2020 | 6 | 7 |
| 2021 | 5 | 6 |
| 2022 | 5 | 6 |
| 2023 | 5 | 5 |
| 2024 | 6 | 5 |
| 2025 | 3 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and arrangement for operating pump system14 Jul 2026US 12,683,531 B2ABB Schweiz AG
- Portable variable frequency drive19 May 2026US 12,633,859 B2Board of Regents, The University of Texas System
- Method of setting up an electrical motor speed control in a fluidic system23 Dec 2025US 12,504,015 B2Schneider Toshiba Inverter Europe SAS
- Systems and methods for controlling inducer motor speed15 Apr 2025US 12,278,580 B2Copeland Comfort Control LP
- Controller and drive circuit for electric motors18 Feb 2025US 12,231,069 B2Regal Beloit America, Inc.
- Fryer filter pump protection with multi-speed filtration and top off1 Oct 2026US 2026/0294169 A1The Frymaster Corporation
- Hydraulic system and method for controlling hydraulic system1 Oct 2026US 2026/0298215 A1Sumitomo Precision Products Co., Ltd.
- Motor power optimization for downhole motors11 Dec 2025US 2025/0376979 A1Schlumberger Technology Corporation
- Systems and Methods for Controlling Inducer Motor Speed19 Jun 2025US 2025/0202401 A1Copeland Comfort Control LP
- Portable variable frequency drive19 Dec 2024US 2024/0421743 A1Board of Regents, The University of Texas System
Most cited
By later US patents
- Method and apparatus for controlling AC motor39US 4,451,112 AHitachi, Ltd. · 1984
- Method and apparatus for controlling an alternating current motor load using plural controlled-current inverter circuits33US 4,349,772 AGeneral Electric Company · 1982
- Method and apparatus for controlling the speed of induction motors30US 3,983,463 ATokyo Shibaura Denki Kabushiki Kaisha · 1976
- Servo motor control apparatus30US 5,038,090 AToyota Jidosha Kabushiki Kaisha · 1991
- Reversible variable frequency oscillator for smooth reversing of AC motor drives29US 4,227,138 AGeneral Electric Company · 1980