H02P 8/36
Protection against faults
Official title: Protection against faults, e.g. against overheating or step-out; Indicating faults
H02P8/36 (Protection against faults) appears on 233 US grants and 218 published applications in this corpus.
Search patents in H02P- Granted patents
- 233
- Published applications
- 218
- Assignees
- 158
- Inventors
- 421
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 4 |
| 2003 | 4 | 4 |
| 2004 | 4 | 4 |
| 2005 | 5 | 5 |
| 2006 | 5 | 9 |
| 2007 | 4 | 2 |
| 2008 | 5 | 7 |
| 2009 | 5 | 14 |
| 2010 | 6 | 10 |
| 2011 | 6 | 14 |
| 2012 | 8 | 4 |
| 2013 | 11 | 13 |
| 2014 | 10 | 18 |
| 2015 | 8 | 5 |
| 2016 | 13 | 11 |
| 2017 | 7 | 14 |
| 2018 | 11 | 9 |
| 2019 | 21 | 16 |
| 2020 | 9 | 13 |
| 2021 | 10 | 8 |
| 2022 | 8 | 4 |
| 2023 | 6 | 5 |
| 2024 | 4 | 9 |
| 2025 | 6 | 8 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motor drive control device, motor unit, and motor drive control method15 Sep 2026US 12,738,869 B2MINEBEA MITSUMI Inc.
- Open-load detection for stepper motor drivers10 Mar 2026US 12,573,971 B2Texas Instruments Incorporated
- Stepper motor stall detection10 Feb 2026US 12,549,117 B2Analog Devices International Unlimited Company
- Method and system for failure predication of cooling fan30 Dec 2025US 12,510,091 B2Richtek Technology Corporation
- Motor control device, motor control method, and a non-transitory storage medium storing a motor control program for a motor control device4 Nov 2025US 12,463,567 B2MINEBEA MITSUMI Inc.
- Motor control system24 Sep 2026US 2026/0291414 A1Kabushiki Kaisha Toshiba
- Method for monitoring the control of an electronically commutated electric machine20 Aug 2026US 2026/0246404 A1AUMOVIO Germany GmbH
- A method for detecting a state of stall in a rotating stepping motor13 Aug 2026US 2026/0232925 A1Shl Medical AG
- Drive device and method for controlling drive device23 Jul 2026US 2026/0213687 A1Mitsubishi Heavy Industries, Ltd.
- Drive control system9 Jul 2026US 2026/0196953 A1Shimadzu Corporation
Most cited
By later US patents
- Systems and methods of electric motor control930US 6,586,898 B2Magnon Engineering, Inc. · 2003
- Occlusion detection using pulse-width modulation and medical device incorporating same123US 8,603,027 B2Medtronic MiniMed, Inc. · 2013
- Dynamic pulse-width modulation motor control and medical device incorporating same120US 8,603,026 B2Medtronic MiniMed, Inc. · 2013
- Recording apparatus96US 5,334,920 ACanon Kabushiki Kaisha · 1994
- System and method for detection and control of circulating currents in a motor88US 5,825,597 AGeneral Electric Company · 1998