H02P 1/021
Protection against "no voltage condition"
Official title: {Protection against "no voltage condition"}
H02P1/021 (Protection against "no voltage condition") appears on 13 US grants and 16 published applications in this corpus.
Search patents in H02P- Granted patents
- 13
- Published applications
- 16
- Assignees
- 17
- Inventors
- 36
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 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 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control circuit and method for DC motors14 Apr 2026US 12,603,588 B2Intex Marketing Ltd.
- Device and method for operating a drive system25 Feb 2025US 12,237,793 B2Sew-Eurodrive GmbH & Co. KG
- Motor protecting circuit7 Feb 2023US 11,575,257 B2Anpec Electronics Corporation
- Ceramic permanent magnet protection5 May 2020US 10,644,500 B2Ge Global Sourcing LLC
- Motor control system and control system for electric motor-driven vehicle21 Nov 2017US 9,825,559 B2Kanzaki Kokyukoki Mfg.Co., Ltd.
- Control circuit and method for dc motors6 Aug 2026US 2026/0230009 A1Intex Marketing Ltd.
- Method, apparatus, storage medium and program product for reduced-voltage starting of motor16 Jul 2026US 2026/0205034 A1Schneider Electric Industries SAS
- Hybrid multi-stage device for motor starters9 Oct 2025US 2025/0317078 A1Saudi Arabian Oil Company
- Control circuit and method for dc motors15 Feb 2024US 2024/0056002 A1Intex Marketing Ltd.
- Device and method for operating a drive system9 Mar 2023US 2023/0073603 A1Sew-Eurodrive GmbH & Co. KG
Most cited
By later US patents
- Protective panel circuit21US 3,958,164 ABethlehem Steel Corporation · 1976
- Motor control system and control system for electric motor-driven vehicle13US 9,263,975 B2Kanzaki Kokyukoki Mfg.Co., Ltd. · 2016
- Rock crusher motor control circuit for preventing relay drop out9US 4,438,383 AEtheridge Electric, Inc. · 1984
- Power system protection9US 8,760,094 B2The Boeing Company · 2014
- Resetting a motor controller for power system protection6US 9,588,535 B2The Boeing Company · 2017