H02P 8/34
Monitoring operation
Official title: Monitoring operation (H02P8/36 takes precedence)
H02P8/34 (Monitoring operation) appears on 171 US grants and 150 published applications in this corpus.
Search patents in H02P- Granted patents
- 171
- Published applications
- 150
- Assignees
- 139
- Inventors
- 355
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 3 |
| 2003 | 4 | 1 |
| 2004 | 0 | 3 |
| 2005 | 3 | 3 |
| 2006 | 4 | 5 |
| 2007 | 3 | 4 |
| 2008 | 5 | 4 |
| 2009 | 3 | 6 |
| 2010 | 3 | 4 |
| 2011 | 3 | 7 |
| 2012 | 5 | 9 |
| 2013 | 8 | 5 |
| 2014 | 6 | 8 |
| 2015 | 6 | 5 |
| 2016 | 5 | 4 |
| 2017 | 5 | 6 |
| 2018 | 8 | 8 |
| 2019 | 6 | 14 |
| 2020 | 9 | 10 |
| 2021 | 7 | 4 |
| 2022 | 7 | 8 |
| 2023 | 9 | 7 |
| 2024 | 7 | 5 |
| 2025 | 4 | 8 |
| 2026 | 1 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and apparatus to sense changes in a load of a stepper motor16 Jun 2026US 12,658,830 B2Texas Instruments Incorporated
- Electronic watch and electronic watch control method14 Oct 2025US 12,443,147 B2Seiko Epson Corporation
- Electric valve control device, electric valve device, and method for controlling electric valve2 Sep 2025US 12,404,950 B2Fujikoki Corporation
- Encoder specifying method and driver5 Aug 2025US 12,381,496 B2OMRON Corporation
- Systems and methods for controlling the position of a moving light fixture3 Jun 2025US 12,320,509 B2Electronic Theatre Controls, Inc.
- Motor control system24 Sep 2026US 2026/0291414 A1Kabushiki Kaisha Toshiba
- Method, System, and Computer Program Product for Calibrating an Actuator17 Sep 2026US 2026/0280454 A1Bd Kiestra B. V.
- 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
- Power supply method for a stepper motor and drive device for operating the latter16 Jul 2026US 2026/0205038 A1Carel Industries S.P.A.
Most cited
By later US patents
- Low power stepper motor drive system and method73US 4,851,755 AAmpex Corporation · 1989
- System for controlling drive of stepping motor52US 5,648,710 ACanon Kabushiki Kaisha · 1997
- Process and apparatus for characterizing and controlling a synchronous motor in microstepper mode47US 4,710,691 AAnacomp, Inc. · 1987
- Adaptive controller for a motor vehicle engine throttle operator24US 4,684,866 AGeneral Motors Corporation · 1987
- Flow quantity valve controller and manufacturing method for flow quantity valve24US 5,501,201 AMitsubishi Denki Kabushiki Kaisha · 1996