F01D 21/04
Responsive to undesired position of rotor relative to stator or to breaking-off
Official title: responsive to undesired position of rotor relative to stator {or to breaking-off of a part of the rotor}, e.g. indicating such position
F01D21/04 (Responsive to undesired position of rotor relative to stator or to breaking-off) appears on 1,180 US grants and 1,136 published applications in this corpus.
Search patents in F01D- Granted patents
- 1,180
- Published applications
- 1,136
- Assignees
- 195
- Inventors
- 2,104
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 9 | 0 |
| 1985 | 13 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 15 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 17 | 0 |
| 2001 | 21 | 7 |
| 2002 | 19 | 6 |
| 2003 | 14 | 19 |
| 2004 | 17 | 21 |
| 2005 | 8 | 33 |
| 2006 | 27 | 27 |
| 2007 | 9 | 17 |
| 2008 | 25 | 29 |
| 2009 | 13 | 40 |
| 2010 | 13 | 37 |
| 2011 | 26 | 33 |
| 2012 | 34 | 46 |
| 2013 | 37 | 51 |
| 2014 | 34 | 56 |
| 2015 | 54 | 62 |
| 2016 | 29 | 82 |
| 2017 | 60 | 55 |
| 2018 | 72 | 75 |
| 2019 | 73 | 75 |
| 2020 | 83 | 86 |
| 2021 | 64 | 58 |
| 2022 | 69 | 48 |
| 2023 | 59 | 40 |
| 2024 | 59 | 57 |
| 2025 | 67 | 46 |
| 2026 | 22 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Containment ring for gas turbine engine28 Jul 2026US 12,692,799 B2Pratt & Whitney Canada Corp.
- Light weight fan casing configurations for energy absorption16 Jun 2026US 12,655,773 B2General Electric Company
- Propulsion unit comprising a suspension system of the rear part of the engine, aircraft comprising at least one such propulsion unit2 Jun 2026US 12,643,670 B2Airbus Operations GmbH
- Rotor stage containment structure for gas turbine engine17 Sep 2026US 2026/0275882 A1Pratt & Whitney Canada Corp.
- Airfoils for gas turbine engines27 Aug 2026US 2026/0251064 A1General Electric Company
- Active tip clearance control system for aircraft engine27 Aug 2026US 2026/0251072 A1Pratt & Whitney Canada Corp.
- Turbine engine with composite airfoils13 Aug 2026US 2026/0235036 A1General Electric Company
- Reference markers for engine components and methods of measuring the same6 Aug 2026US 2026/0227285 A1General Electric Company
Most cited
By later US patents
- Jet aircraft fan case containment design378US 6,814,541 B2General Electric Company · 2004
- Light weight fan blade containment system371US 5,447,411 AMartin Marietta Corporation · 1995
- Bearing damper system211US 4,289,360 AGeneral Electric Company · 1981
- Mid turbine frame system for gas turbine engine132US 8,061,969 B2Pratt & Whitney Canada Corp. · 2011
- Spiral wound containment ring122US 5,163,809 APratt & Whitney Canada Corp. · 1992