F05D 2270/01
Purpose of the control system
F05D2270/01 (Purpose of the control system) appears on 3,358 US grants and 3,741 published applications in this corpus.
Search patents in F05D- Granted patents
- 3,358
- Published applications
- 3,741
- Assignees
- 578
- Inventors
- 6,230
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 19 | 0 |
| 1985 | 15 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 10 | 0 |
| 1989 | 12 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 12 | 0 |
| 1994 | 20 | 0 |
| 1995 | 18 | 0 |
| 1996 | 19 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 17 | 0 |
| 2000 | 20 | 0 |
| 2001 | 29 | 5 |
| 2002 | 36 | 31 |
| 2003 | 41 | 51 |
| 2004 | 49 | 63 |
| 2005 | 38 | 58 |
| 2006 | 51 | 72 |
| 2007 | 44 | 92 |
| 2008 | 52 | 93 |
| 2009 | 55 | 98 |
| 2010 | 68 | 155 |
| 2011 | 70 | 111 |
| 2012 | 93 | 109 |
| 2013 | 116 | 144 |
| 2014 | 100 | 135 |
| 2015 | 92 | 187 |
| 2016 | 125 | 214 |
| 2017 | 147 | 288 |
| 2018 | 175 | 280 |
| 2019 | 252 | 220 |
| 2020 | 251 | 295 |
| 2021 | 244 | 227 |
| 2022 | 232 | 190 |
| 2023 | 239 | 221 |
| 2024 | 218 | 150 |
| 2025 | 179 | 142 |
| 2026 | 86 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F05D 2270/02To control rotational speedIndexing code569
- F05D 2270/08To produce clean exhaust gasesIndexing code537
- F05D 2270/05To affect the output of the engineIndexing code534
- F05D 2270/09To cope with emergenciesIndexing code506
- F05D 2270/10To cope with, or avoid, compressor flow instabilitiesIndexing code456
- F05D 2270/11To prolong engine lifeIndexing code452
- F05D 2270/17To control boundary layerIndexing code279
- F05D 2270/20To optimize the performance of a machineIndexing code170
All 17 subgroupsShow fewer
- F05D 2270/06To match engine to driven deviceIndexing code139
- F05D 2270/04To control accelerationIndexing code131
- F05D 2270/07To improve fuel economyIndexing code130
- F05D 2270/13To control two or more engines simultaneouslyIndexing code100
- F05D 2270/14To control thermoacoustic behaviour in the combustion chambersIndexing code87
- F05D 2270/03In variable speed operationIndexing code53
- F05D 2270/16To control water or steam injectionIndexing code52
- F05D 2270/12To maintain desired vehicle trajectory parametersIndexing code35
- F05D 2270/18Using fluidic amplifiers or actuatorsIndexing code20
Recent patents
- System and method for controlling engines of a multi-engine aircraft engine assembly29 Sep 2026US 12,747,708 B2Pratt & Whitney Canada Corp.
- Anti-stall system with a fuel cell22 Sep 2026US 12,742,425 B2General Electric Company
- System and method for overspeed detection and protection in an engine15 Sep 2026US 12,735,993 B2General Electric Company
- Power plant for controlling the renewable energy use in an LNG train18 Aug 2026US 12,710,013 B2
- Control for electrically assisted turbines4 Aug 2026US 12,698,748 B2Pratt & Whitney Canada Corp.
- Turbine engine tip clearance control utilizing electric machine8 Oct 2026US 2026/0309046 A1Rtx Corporation
- Aircraft engine with lubricant system having windmilling configuration8 Oct 2026US 2026/0309051 A1Pratt & Whitney Canada Corp.
- System and method for controlling contrail formation8 Oct 2026US 2026/0309079 A1Rtx Corporation
- Gas turbine propulsion system with variable pitch fan and method for operating the system8 Oct 2026US 2026/0309094 A1Rtx Corporation
- Control device for gas turbine, gas turbine facility, control method for gas turbine, and control program for gas turbine8 Oct 2026US 2026/0309096 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Compressor stall and surge control using airflow asymmetry measurement414US 5,915,917 AUnited Technologies Corporation · 1999
- Fan with collapsible blades, redundant fan system, and related method271US 6,860,713 B2Nidec Corporation · 2005
- Lubrication of windmilling journal bearings269US 7,662,059 B2United Technologies Corporation · 2010
- Multi-compatible digital engine controller179US 9,429,078 B1Tucson Embedded Systems, Inc. · 2016
- Gas turbine engine overspeed prevention178US 9,689,316 B1Tucson Embedded Systems, Inc. · 2017