H02P 7/24
Using discharge tubes or semiconductor devices
Official title: using discharge tubes or semiconductor devices
H02P7/24 (Using discharge tubes or semiconductor devices) appears on 1,683 US grants and 1,079 published applications in this corpus.
Search patents in H02P- Granted patents
- 1,683
- Published applications
- 1,079
- Assignees
- 809
- Inventors
- 2,850
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 57 | 0 |
| 1977 | 47 | 0 |
| 1978 | 34 | 0 |
| 1979 | 40 | 0 |
| 1980 | 41 | 0 |
| 1981 | 45 | 0 |
| 1982 | 24 | 0 |
| 1983 | 46 | 0 |
| 1984 | 42 | 0 |
| 1985 | 28 | 0 |
| 1986 | 21 | 0 |
| 1987 | 31 | 0 |
| 1988 | 19 | 0 |
| 1989 | 27 | 0 |
| 1990 | 11 | 0 |
| 1991 | 23 | 0 |
| 1992 | 8 | 0 |
| 1993 | 18 | 0 |
| 1994 | 20 | 0 |
| 1995 | 15 | 0 |
| 1996 | 22 | 0 |
| 1997 | 20 | 0 |
| 1998 | 17 | 0 |
| 1999 | 29 | 0 |
| 2000 | 18 | 0 |
| 2001 | 23 | 9 |
| 2002 | 13 | 18 |
| 2003 | 29 | 41 |
| 2004 | 36 | 43 |
| 2005 | 22 | 37 |
| 2006 | 39 | 30 |
| 2007 | 34 | 56 |
| 2008 | 24 | 52 |
| 2009 | 46 | 49 |
| 2010 | 35 | 46 |
| 2011 | 36 | 42 |
| 2012 | 30 | 32 |
| 2013 | 43 | 46 |
| 2014 | 41 | 59 |
| 2015 | 54 | 56 |
| 2016 | 49 | 63 |
| 2017 | 49 | 56 |
| 2018 | 51 | 58 |
| 2019 | 67 | 51 |
| 2020 | 58 | 57 |
| 2021 | 49 | 45 |
| 2022 | 41 | 38 |
| 2023 | 34 | 35 |
| 2024 | 36 | 21 |
| 2025 | 25 | 29 |
| 2026 | 16 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control circuit for a direct current motor1 Sep 2026US 12,726,144 B2GM Global Technology Operations LLC
- Exercise apparatus with dynamic in-repetition motor induced resistance4 Aug 2026US 12,697,523 B2
- Electric motors23 Jun 2026US 12,665,453 B2Tau Motors, Inc.
- Diaphragm pump control for airbed applications19 May 2026US 12,633,850 B2Sizewise Rentals, L.L.C.
- Image reading device and control method for image reading device28 Apr 2026US 12,614,997 B2Seiko Epson Corporation
- Motor controller24 Sep 2026US 2026/0291410 A1Global Mixed-mode Technology Inc.
- Electric motors17 Sep 2026US 2026/0280367 A1Tau Motors, Inc.
- Controlling speed of power tool13 Aug 2026US 2026/0238153 A1Mirka Ltd
- Control circuit and method for dc motors6 Aug 2026US 2026/0230009 A1Intex Marketing Ltd.
- Electrical control circuite for a reversible electric motor and control system for a vehicle slideway locking device9 Jul 2026US 2026/0192709 A1
Most cited
By later US patents
- Method and arrangement for control of direct current motor1,395US 7,567,045 B2Kongsberg Automotive AB · 2009
- Motor control device and motor control method1,394US 7,183,737 B2ASMO Co.LTD · 2007
- Surgical stapler having current mirror-based motor control1,222US 10,076,326 B2Ethicon, Inc. · 2018
- DC fan speed control1,219US 4,856,078 AZenith Electronics Corporation · 1989
- Method of controlling a motorized window treatment1,094US 7,839,109 B2Lutron Electronics Co., Inc. · 2010