H02P 1/26
For starting an individual polyphase induction motor
Official title: for starting an individual polyphase induction motor
H02P1/26 (For starting an individual polyphase induction motor) appears on 422 US grants and 302 published applications in this corpus.
Search patents in H02P- Granted patents
- 422
- Published applications
- 302
- Assignees
- 219
- Inventors
- 819
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 13 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 14 | 0 |
| 1988 | 10 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 0 |
| 2002 | 6 | 5 |
| 2003 | 6 | 5 |
| 2004 | 3 | 10 |
| 2005 | 7 | 5 |
| 2006 | 6 | 6 |
| 2007 | 6 | 6 |
| 2008 | 5 | 8 |
| 2009 | 6 | 9 |
| 2010 | 4 | 7 |
| 2011 | 4 | 14 |
| 2012 | 11 | 9 |
| 2013 | 13 | 14 |
| 2014 | 11 | 10 |
| 2015 | 6 | 18 |
| 2016 | 14 | 28 |
| 2017 | 21 | 15 |
| 2018 | 13 | 13 |
| 2019 | 19 | 32 |
| 2020 | 26 | 29 |
| 2021 | 18 | 6 |
| 2022 | 12 | 12 |
| 2023 | 9 | 15 |
| 2024 | 17 | 11 |
| 2025 | 13 | 9 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02P 1/28By progressive increase of voltage applied to primary circuit of motor95
- H02P 1/30By progressive increase of frequency of supply to primary circuit of motor75
- H02P 1/32By star/delta switching58
- H02P 1/40In either direction of rotation22
- H02P 1/265Means for starting or running a triphase motor on a single phase21
- H02P 1/38By pole-changing10
- H02P 1/34By progressive reduction of impedance in secondary circuit7
Recent patents
- System and method for providing inrush current limiting for induction motor starting29 Sep 2026US 12,749,991 B2ABB Schweiz AG
- Apparatus comprising an inverter24 Mar 2026US 12,583,335 B2Thermo King Corporation
- Method, apparatus for operating a conduction assembly, start device, and computer-readable medium17 Mar 2026US 12,580,557 B2Schneider Electric Industries SAS
- Control of motor soft starter using power electronic switching devices6 Jan 2026US 12,519,404 B2Eaton Intelligent Power Limited
- Plug and play solid state controller for high efficiency motors25 Nov 2025US 12,483,171 B2ABB Schweiz AG
- Method, apparatus, storage medium and program product for reduced-voltage starting of motor16 Jul 2026US 2026/0205034 A1Schneider Electric Industries SAS
- Apparatus comprising an inverter9 Jul 2026US 2026/0192687 A1Thermo King Corporation
- Independent transistor gate sequencing for precision zero-cross shutoff11 Jun 2026US 2026/0163502 A1Rockwell Automation Technologies, Inc.
- Motor controller, powertrain, and a control method28 May 2026US 2026/0145549 A1Huawei Digital Power Technologies Co., Ltd.
- Planetary magnetic motor and method of using thereof23 Apr 2026US 2026/0112983 A1
Most cited
By later US patents
- Motor control apparatus with parallel input, serial output signal conditioning means109US 4,434,390 AWestinghouse Electric Corp. · 1984
- Electronic control for a domestic appliance77US 4,481,786 AWhirlpool Corporation · 1984
- Brushless direct current motor having adjustable motor characteristics68US 5,614,799 AMTS Systems Corporation · 1997
- Power supply67US 6,285,178 B1Battelle Memorial Institute · 2001
- Motor controller with instantaneous trip protection63US 5,448,442 ASiemens Energy & Automation, Inc. · 1995