G05F 1/46
Wherein the variable actually regulated by the final control device is dc
Official title: wherein the variable actually regulated by the final control device is DC (G05F1/625 takes precedence)
G05F1/46 (Wherein the variable actually regulated by the final control device is dc) appears on 7,578 US grants and 6,391 published applications in this corpus.
Search patents in G05F- Granted patents
- 7,578
- Published applications
- 6,391
- Assignees
- 1,833
- Inventors
- 11,642
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 39 | 0 |
| 1978 | 25 | 0 |
| 1979 | 27 | 0 |
| 1980 | 18 | 0 |
| 1981 | 24 | 0 |
| 1982 | 28 | 0 |
| 1983 | 16 | 0 |
| 1984 | 31 | 0 |
| 1985 | 31 | 0 |
| 1986 | 34 | 0 |
| 1987 | 52 | 0 |
| 1988 | 46 | 0 |
| 1989 | 53 | 0 |
| 1990 | 53 | 0 |
| 1991 | 52 | 0 |
| 1992 | 78 | 0 |
| 1993 | 90 | 0 |
| 1994 | 72 | 0 |
| 1995 | 70 | 0 |
| 1996 | 113 | 0 |
| 1997 | 89 | 0 |
| 1998 | 103 | 0 |
| 1999 | 148 | 0 |
| 2000 | 126 | 0 |
| 2001 | 128 | 42 |
| 2002 | 110 | 105 |
| 2003 | 114 | 118 |
| 2004 | 121 | 123 |
| 2005 | 95 | 130 |
| 2006 | 113 | 135 |
| 2007 | 119 | 149 |
| 2008 | 112 | 194 |
| 2009 | 141 | 183 |
| 2010 | 153 | 183 |
| 2011 | 158 | 142 |
| 2012 | 146 | 167 |
| 2013 | 157 | 307 |
| 2014 | 235 | 321 |
| 2015 | 301 | 367 |
| 2016 | 378 | 314 |
| 2017 | 380 | 308 |
| 2018 | 379 | 338 |
| 2019 | 452 | 431 |
| 2020 | 459 | 364 |
| 2021 | 327 | 365 |
| 2022 | 365 | 369 |
| 2023 | 367 | 364 |
| 2024 | 291 | 337 |
| 2025 | 300 | 311 |
| 2026 | 232 | 224 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G05F 1/56Using semiconductor devices in series with the load as final control devices5,303
- G05F 1/462As a function of the requirements of the load970
- G05F 1/468Characterised by reference voltage circuitry744
- G05F 1/613Using semiconductor devices in parallel with the load as final control devices234
- G05F 1/461Using an operational amplifier as final control device232
- G05F 1/618Using semiconductor devices in series and in parallel with the load as181
- G05F 1/62Using bucking or boosting dc sources148
- G05F 1/607Using discharge tubes in parallel with the load as final control devices28
All 9 subgroupsShow fewer
Recent patents
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