F01D 25/183
Sealing means
Official title: {Sealing means}
F01D25/183 (Sealing means) appears on 680 US grants and 677 published applications in this corpus.
Search patents in F01D- Granted patents
- 680
- Published applications
- 677
- Assignees
- 150
- Inventors
- 1,258
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 2 |
| 2002 | 9 | 4 |
| 2003 | 3 | 3 |
| 2004 | 4 | 6 |
| 2005 | 4 | 10 |
| 2006 | 6 | 10 |
| 2007 | 4 | 10 |
| 2008 | 4 | 13 |
| 2009 | 3 | 8 |
| 2010 | 6 | 11 |
| 2011 | 9 | 16 |
| 2012 | 13 | 12 |
| 2013 | 11 | 38 |
| 2014 | 22 | 33 |
| 2015 | 15 | 32 |
| 2016 | 16 | 53 |
| 2017 | 38 | 38 |
| 2018 | 53 | 66 |
| 2019 | 64 | 62 |
| 2020 | 67 | 51 |
| 2021 | 56 | 45 |
| 2022 | 65 | 48 |
| 2023 | 47 | 38 |
| 2024 | 36 | 29 |
| 2025 | 40 | 24 |
| 2026 | 22 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Breather system for aircraft engine6 Oct 2026US 12,753,709 B1Pratt & Whitney Canada Corp.
- Failure detection of an oil transfer seal18 Aug 2026US 12,709,994 B1Pratt & Whitney Canada Corp.
- Aspirating face seal assembly for a rotary machine11 Aug 2026US 12,704,074 B2General Electric Company
- Sleeve for serially-arranged seal elements28 Jul 2026US 12,692,800 B2Pratt & Whitney Canada Corp.
- De-aerator seal of oil system28 Jul 2026US 12,692,801 B2Pratt & Whitney Canada Corp.
- Axial pump with reduced clearance feature1 Oct 2026US 2026/0298345 A1Pratt & Whitney Canada Corp.
- Turbomachine27 Aug 2026US 2026/0251078 A1Kawasaki Jukogyo Kabushiki Kaisha
- Non rotating spacer for gas turbine engine27 Aug 2026US 2026/0251245 A1Pratt & Whitney Canada Corp.
- Wire retention for carbon seal and method of assembly13 Aug 2026US 2026/0235042 A1Rtx Corporation
- Method for reducing adhesive damage due to loss of lubrication in aerospace piston rings23 Jul 2026US 2026/0210257 A1Rtx Corporation
Most cited
By later US patents
- Air cooler for providing buffer air to a bearing compartment83US 4,645,415 AUnited Technologies Corporation · 1987
- Bearing cooling arrangement for air cycle machine65US 5,113,670 AUnited Technologies Corporation · 1992
- Rotor support for a turbine engine63US 5,791,789 AUnited Technologies Corporation · 1998
- Sealing system for a turboexpander compressor56US 4,477,223 ATexas Turbine, Inc. · 1984
- Air cooler for providing buffer air to a bearing compartment56US 4,542,623 AUnited Technologies Corporation · 1985