F01D 25/243
Flange connections
Official title: {Flange connections; Bolting arrangements (F01D25/265 takes precedence)}
F01D25/243 (Flange connections) appears on 1,051 US grants and 1,116 published applications in this corpus.
Search patents in F01D- Granted patents
- 1,051
- Published applications
- 1,116
- Assignees
- 190
- Inventors
- 2,277
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 3 |
| 2002 | 11 | 1 |
| 2003 | 4 | 13 |
| 2004 | 10 | 9 |
| 2005 | 6 | 14 |
| 2006 | 7 | 15 |
| 2007 | 8 | 12 |
| 2008 | 12 | 10 |
| 2009 | 2 | 12 |
| 2010 | 5 | 27 |
| 2011 | 10 | 20 |
| 2012 | 21 | 41 |
| 2013 | 17 | 49 |
| 2014 | 31 | 49 |
| 2015 | 42 | 93 |
| 2016 | 33 | 107 |
| 2017 | 56 | 77 |
| 2018 | 84 | 88 |
| 2019 | 101 | 76 |
| 2020 | 103 | 87 |
| 2021 | 97 | 57 |
| 2022 | 75 | 59 |
| 2023 | 70 | 60 |
| 2024 | 63 | 41 |
| 2025 | 65 | 52 |
| 2026 | 36 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Motorized compressor device with air bearing having reduced axial and radial stack-up6 Oct 2026US 12,753,707 B2Garrett Transportation I Inc.
- Joint arrangement for impeller containment22 Sep 2026US 12,742,400 B2Pratt & Whitney Canada Corp.
- Cooling fluid guide for gas turbine and gas turbine1 Sep 2026US 12,723,522 B2Mitsubishi Heavy Industries, Ltd.
- Connection assembly for a gas turbine engine1 Sep 2026US 12,723,523 B2GE Avio S. r. l.
- Pin mounted ceramic matrix composite heat shields with impingement cooling18 Aug 2026US 12,709,992 B2ROLLS-ROYCE plc
- Ceramic matrix composite seal repair8 Oct 2026US 2026/0309044 A1Rtx Corporation
- Tie-bolt for coupling a turbine with a compressor in a turbine engine1 Oct 2026US 2026/0298109 A1General Electric Company
- Non rotating spacer for gas turbine engine27 Aug 2026US 2026/0251245 A1Pratt & Whitney Canada Corp.
- Flange assembly with washer for turbocharging system20 Aug 2026US 2026/0243175 A1Accelleron Switzerland Ltd.
- Turbine engine with composite airfoils13 Aug 2026US 2026/0235036 A1General Electric Company
Most cited
By later US patents
- Mid turbine frame for gas turbine engine136US 8,091,371 B2Pratt & Whitney Canada Corp. · 2012
- Turbine support assembly including turbine heat shield and bolt retainer assembly94US 5,211,541 AGeneral Electric Company · 1993
- Pod for a turbofan aero engine of the forward contrafan type having a very high bypass ratio88US 5,157,915 ASociete Nationale d'Etude et de Construction de Motors d'Aviation · 1992
- Segmented turbine flowpath assembly80US 5,357,744 AGeneral Electric Company · 1994
- Noise reducing connection assembly for aircraft turbine housings63US 6,123,170 AAerospatiale Societe Nationale Industrielle · 2000