F01D 25/36
Using electric motors
Official title: using electric motors
F01D25/36 (Using electric motors) appears on 95 US grants and 111 published applications in this corpus.
Search patents in F01D- Granted patents
- 95
- Published applications
- 111
- Assignees
- 39
- Inventors
- 210
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 4 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 3 |
| 2010 | 2 | 1 |
| 2011 | 2 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 4 |
| 2014 | 0 | 4 |
| 2015 | 3 | 2 |
| 2016 | 3 | 6 |
| 2017 | 7 | 13 |
| 2018 | 4 | 18 |
| 2019 | 15 | 7 |
| 2020 | 14 | 11 |
| 2021 | 6 | 4 |
| 2022 | 8 | 8 |
| 2023 | 3 | 2 |
| 2024 | 6 | 9 |
| 2025 | 9 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric enhanced transmission for multi-spool load-sharing turbofan engine10 Mar 2026US 12,571,352 B2Rtx Corporation
- Method for controlling a gas turbine engine30 Dec 2025US 12,509,997 B2Safran Aircraft Engines
- System and method for mitigating bowed rotor in a gas turbine engine25 Nov 2025US 12,480,423 B2General Electric Company
- Multi-mode starter control for gas turbine engines30 Sep 2025US 12,428,997 B2Rtx Corporation
- Turbine engine including an engine starter assembly22 Jul 2025US 12,366,208 B2Unison Industries, LLC
- System and method for cleaning gas turbine engines18 Jun 2026US 2026/0168401 A1General Electric Company
- Solenoid valve for preventing wear in a gearbox during a wash event of a gas turbine engine18 Jun 2026US 2026/0168436 A1General Electric Company
- Power converter topology and control scheme for mitigating thermal bowing in gas turbine engines11 Jun 2026US 2026/0160187 A1General Electric Company
- Turbine engine including an engine starter assembly9 Oct 2025US 2025/0314204 A1Unison Industries, LLC
- Direct drive with electric machine integrated low spool shaft for hybrid engine9 Oct 2025US 2025/0314206 A1
Most cited
By later US patents
- Differential geared turbine engine with torque modulation capability165US 6,895,741 B2Pratt & Whitney Canada Corp. · 2005
- Aircraft with disengageable engine and auxiliary power unit components72US 7,805,947 B22010
- Method of operating a gas turbine engine63US 7,926,287 B2Pratt & Whitney Canada Corp. · 2011
- Bowed rotor prevention system58US 9,664,070 B1United Technologies Corporation · 2017
- Operation of an aircraft engine after emergency shutdown56US 7,854,582 B2Pratt & Whitney Canada Corp. · 2010