H02P 6/18
Without separate position detecting elements
Official title: without separate position detecting elements
H02P6/18 (Without separate position detecting elements) appears on 2,260 US grants and 2,180 published applications in this corpus.
Search patents in H02P- Granted patents
- 2,260
- Published applications
- 2,180
- Assignees
- 841
- Inventors
- 3,695
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 19 | 0 |
| 1992 | 16 | 0 |
| 1993 | 28 | 0 |
| 1994 | 28 | 0 |
| 1995 | 25 | 0 |
| 1996 | 25 | 0 |
| 1997 | 20 | 0 |
| 1998 | 37 | 0 |
| 1999 | 35 | 0 |
| 2000 | 27 | 0 |
| 2001 | 29 | 14 |
| 2002 | 35 | 30 |
| 2003 | 31 | 34 |
| 2004 | 34 | 59 |
| 2005 | 40 | 47 |
| 2006 | 58 | 61 |
| 2007 | 65 | 61 |
| 2008 | 41 | 72 |
| 2009 | 50 | 69 |
| 2010 | 45 | 75 |
| 2011 | 67 | 89 |
| 2012 | 77 | 77 |
| 2013 | 76 | 95 |
| 2014 | 91 | 145 |
| 2015 | 110 | 115 |
| 2016 | 96 | 110 |
| 2017 | 133 | 120 |
| 2018 | 118 | 123 |
| 2019 | 125 | 126 |
| 2020 | 115 | 142 |
| 2021 | 98 | 102 |
| 2022 | 127 | 106 |
| 2023 | 96 | 104 |
| 2024 | 85 | 89 |
| 2025 | 85 | 74 |
| 2026 | 31 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02P 6/182Using back-emf in windings1,176
- H02P 6/185Using inductance sensing399
- H02P 6/183Using an injected high frequency signal215
- H02P 6/181Using different methods depending on the speed130
- H02P 6/186Using difference of inductance or reluctance between the phases87
- H02P 6/187Using the star point voltage74
- H02P 6/188Using the voltage difference between the windings32
Recent patents
- Power tool including conduction angle control6 Oct 2026US 12,756,336 B2Milwaukee Electric Tool Corporation
- Motor control device and magnetic pole position calculation method6 Oct 2026US 12,756,337 B2Hitachi Astemo, Ltd.
- Forced discharge apparatus and method for high voltage component6 Oct 2026US 12,756,338 B2Hyundai Motor Company
- Motor angular position control25 Aug 2026US 12,719,392 B2Schlumberger Technology Corporation
- Compensation system and method for zero-crossing voltage of back electromotiv force of brushless direct current motor25 Aug 2026US 12,719,394 B2Jiangsu Dongcheng Tools Technology Co., Ltd.
- Method for determining a rotor position for a rotor of an ec motor for a power tool, data processing apparatus, computer program, computer-readable storage medium, motor assembly, sensorless ec motor, and power tool1 Oct 2026US 2026/0302975 A1Festool GmbH
- Method for determining the rotor position of an ec motor24 Sep 2026US 2026/0291411 A1Schaeffler Technologies AG & Co. KG
- Smart converter for a synchronous motor24 Sep 2026US 2026/0291412 A1Safran Electronics & Defense
- Active short circuit overcurrent detection10 Sep 2026US 2026/0269712 A1Caterpillar Inc.
- Method for operating an electric motor27 Aug 2026US 2026/0254377 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Method of driving DC motor and related circuit for avoiding reverse current1,002US 8,183,807 B2Anpec Electronics Corporation · 2012
- Systems and methods of electric motor control930US 6,586,898 B2Magnon Engineering, Inc. · 2003
- Surgical machine and method for controlling and/or regulating a surgical machine918US 7,362,062 B2Aesculap AG · 2008
- Control device for electric motor412US 7,005,828 B2Nissan Motor Co., Ltd. · 2006
- Apparatus and method for detection and control of circulating currents in a variable speed DC motor243US 5,552,685 AGeneral Electric Company · 1996