F01D 21/06
Shutting-down
F01D21/06 (Shutting-down) appears on 91 US grants and 90 published applications in this corpus.
Search patents in F01D- Granted patents
- 91
- Published applications
- 90
- Assignees
- 35
- Inventors
- 208
- Latest grant
- 11 Aug 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 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 3 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 1 | 6 |
| 2009 | 1 | 3 |
| 2010 | 6 | 4 |
| 2011 | 3 | 3 |
| 2012 | 2 | 4 |
| 2013 | 3 | 2 |
| 2014 | 5 | 6 |
| 2015 | 3 | 2 |
| 2016 | 4 | 5 |
| 2017 | 2 | 6 |
| 2018 | 3 | 5 |
| 2019 | 8 | 6 |
| 2020 | 7 | 8 |
| 2021 | 4 | 5 |
| 2022 | 7 | 2 |
| 2023 | 6 | 1 |
| 2024 | 6 | 7 |
| 2025 | 5 | 2 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Propulsion system having fluidly separate lubrication systems for propulsors and turbo-engine11 Aug 2026US 12,704,096 B2General Electric Company
- Core compartment vent during engine shutdown to reduced bowed rotor start19 May 2026US 12,631,144 B2Rtx Corporation
- Turbine overspeed protection2 Dec 2025US 12,486,784 B2ROLLS-ROYCE plc
- Propulsor blade imaging assembly for an aircraft propulsion system12 Aug 2025US 12,385,412 B2Rtx Corporation
- Propulsor blade imaging assembly for an aircraft propulsion system5 Aug 2025US 12,379,645 B2Rtx Corporation
- System and method for frangible plug electronic shaft shear detection23 Jul 2026US 2026/0210268 A1Pratt & Whitney Canada Corp.
- Power converter topology and control scheme for mitigating thermal bowing in gas turbine engines11 Jun 2026US 2026/0160187 A1General Electric Company
- Rotor crack detection and mitigation4 Jun 2026US 2026/0153042 A1Pratt & Whitney Canada Corp.
- Propulsion system having fluidly separate lubrication systems for propulsors and turbo-engine12 Mar 2026US 2026/0071576 A1General Electric Company
- Hydrogen fuel delivery system10 Jul 2025US 2025/0223931 A1ROLLS-ROYCE plc
Most cited
By later US patents
- Combustion method74US 6,675,583 B2Capstone Turbine Corporation · 2004
- Method of operating a gas turbine engine63US 7,926,287 B2Pratt & Whitney Canada Corp. · 2011
- Operation of an aircraft engine after emergency shutdown56US 7,854,582 B2Pratt & Whitney Canada Corp. · 2010
- Combustion system with shutdown fuel purge54US 6,804,946 B2Capstone Turbine Corporation · 2004
- Performance envelope extension method for a gas turbine engine53US 4,854,120 ACEF Industries, Inc. · 1989