F05D 2270/52
By electrical means
Official title: by electrical means, e.g. relays or switches
F05D2270/52 (By electrical means) appears on 56 US grants and 65 published applications in this corpus.
Search patents in F05D- Granted patents
- 56
- Published applications
- 65
- Assignees
- 37
- Inventors
- 128
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 2 | 0 |
| 2009 | 1 | 4 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 0 | 3 |
| 2015 | 4 | 3 |
| 2016 | 3 | 6 |
| 2017 | 2 | 5 |
| 2018 | 6 | 2 |
| 2019 | 2 | 4 |
| 2020 | 3 | 5 |
| 2021 | 2 | 7 |
| 2022 | 9 | 6 |
| 2023 | 8 | 4 |
| 2024 | 2 | 2 |
| 2025 | 3 | 3 |
| 2026 | 3 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Multicore hybrid-electric powertrain controller6 Oct 2026US 12,752,769 B2Pratt & Whitney Canada Corp.
- Fault tolerant electrical starting of gas-turbine engine16 Jun 2026US 12,655,799 B2ROLLS-ROYCE plc
- Systems and methods for servicing a turbomachine19 May 2026US 12,631,118 B2GE Vernova Infrastructure Technology LLC
- Control device, pump unit, and refrigerant circulation device9 Sep 2025US 12,413,066 B2Nidec Corporation
- Electrically starting a gas turbine engine8 Jul 2025US 12,352,212 B2ROLLS-ROYCE plc
- Systems and methods for servicing a turbomachine2 Apr 2026US 2026/0092531 A1GE Infrastructure Technology LLC
- Multicore hybrid-electric powertrain controller22 Jan 2026US 2026/0021802 A1Pratt & Whitney Canada Corp.
- Control device, pump unit, and refrigerant circulation device20 Nov 2025US 2025/0357744 A1Nidec Corporation
- Electrically starting a gas turbine engine12 Jun 2025US 2025/0188870 A1ROLLS-ROYCE plc
- Fault tolerant electrical starting of gas-turbine engine30 Jan 2025US 2025/0035047 A1ROLLS-ROYCE plc
Most cited
By later US patents
- Methods for starting a combustion turbine and combustion turbine generator configured to implement same methods38US 6,762,512 B2Siemens Westinghourse Power Corporation · 2004
- Monitoring system for turbomachinery23US 7,392,713 B2United Technologies Corporation · 2008
- Electrical thrust reverser tertiary lock system including a voltage limiting circuit14US 7,409,820 B2Honeywell International Inc. · 2008
- Tertiary lock system power unit12US 8,018,696 B2Honeywell International Inc. · 2011
- System and method for controlling a gas turbine engine10US 9,732,625 B2United Technologies Corporation · 2017