G05F 1/00
Automatic systems in which deviations of an electric quantity from one or
Official title: Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
G05F1/00 (Automatic systems in which deviations of an electric quantity from one or) appears on 11,617 US grants and 10,297 published applications in this corpus.
Search patents in G05F- Granted patents
- 11,617
- Published applications
- 10,297
- Assignees
- 3,087
- Inventors
- 18,321
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 72 | 0 |
| 1977 | 67 | 0 |
| 1978 | 50 | 0 |
| 1979 | 53 | 0 |
| 1980 | 38 | 0 |
| 1981 | 44 | 0 |
| 1982 | 52 | 0 |
| 1983 | 37 | 0 |
| 1984 | 49 | 0 |
| 1985 | 43 | 0 |
| 1986 | 53 | 0 |
| 1987 | 77 | 0 |
| 1988 | 56 | 0 |
| 1989 | 76 | 0 |
| 1990 | 81 | 0 |
| 1991 | 70 | 0 |
| 1992 | 103 | 0 |
| 1993 | 115 | 0 |
| 1994 | 107 | 0 |
| 1995 | 101 | 0 |
| 1996 | 161 | 0 |
| 1997 | 124 | 0 |
| 1998 | 136 | 0 |
| 1999 | 171 | 0 |
| 2000 | 149 | 0 |
| 2001 | 161 | 46 |
| 2002 | 137 | 122 |
| 2003 | 123 | 133 |
| 2004 | 142 | 165 |
| 2005 | 124 | 184 |
| 2006 | 152 | 176 |
| 2007 | 142 | 189 |
| 2008 | 140 | 257 |
| 2009 | 182 | 240 |
| 2010 | 195 | 273 |
| 2011 | 209 | 317 |
| 2012 | 218 | 299 |
| 2013 | 287 | 544 |
| 2014 | 404 | 663 |
| 2015 | 558 | 783 |
| 2016 | 643 | 710 |
| 2017 | 702 | 608 |
| 2018 | 716 | 627 |
| 2019 | 830 | 735 |
| 2020 | 768 | 605 |
| 2021 | 542 | 535 |
| 2022 | 525 | 517 |
| 2023 | 534 | 471 |
| 2024 | 422 | 437 |
| 2025 | 391 | 398 |
| 2026 | 285 | 263 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Voltage control device and method considering line power loss in voltage drop using CVR factor6 Oct 2026US 12,754,575 B2Crocus Inc.
- Transformer-hybrid variable reactance6 Oct 2026US 12,754,576 B2Clark Power Systems, Inc.
- Methods and devices for controlling a high-voltage generator6 Oct 2026US 12,754,577 B2Shanghai United Imaging Healthcare Co., Ltd.
- Current detection circuit and power supply semiconductor integrated circuit6 Oct 2026US 12,754,578 B2Mitsumi Electric Co., Ltd.
- Low dropout regulator6 Oct 2026US 12,754,579 B2Gigadevice Semiconductor Inc.
- Smart switch with functionalities determined based on a grounded conductor connection8 Oct 2026US 2026/0310248 A1Roku, Inc.
- Voltage control device and operation method thereof8 Oct 2026US 2026/0310249 A1Wistron Corporation
- Adjustable voltage divider circuit and method8 Oct 2026US 2026/0310250 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Voltage regulators with shared decoupling capacitor for memory devices8 Oct 2026US 2026/0310251 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Radio frequency band switching in a power management integrated circuit8 Oct 2026US 2026/0312854 A1Qorvo US, Inc.
Most cited
By later US patents
- Surgical instrument control circuit having a safety processor1,553US 9,690,362 B2Ethicon, Inc. · 2017
- Systems and methods for controlling a segmented circuit1,496US 9,804,618 B2Ethicon, Inc. · 2017
- Power management through segmented circuit and variable voltage protection1,481US 9,733,663 B2Ethicon, Inc. · 2017
- Sterilization verification circuit1,467US 9,826,977 B2Ethicon, Inc. · 2017
- Power management through sleep options of segmented circuit and wake up control1,444US 10,013,049 B2Ethicon, Inc. · 2018