F01D 5/20
Specially-shaped blade tips to seal space between tips and stator
Official title: Specially-shaped blade tips to seal space between tips and stator {(F01D5/225 takes precedence)}
F01D5/20 (Specially-shaped blade tips to seal space between tips and stator) appears on 881 US grants and 826 published applications in this corpus.
Search patents in F01D- Granted patents
- 881
- Published applications
- 826
- Assignees
- 109
- Inventors
- 1,648
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 16 | 2 |
| 2002 | 15 | 16 |
| 2003 | 16 | 10 |
| 2004 | 13 | 20 |
| 2005 | 11 | 20 |
| 2006 | 20 | 24 |
| 2007 | 14 | 28 |
| 2008 | 14 | 23 |
| 2009 | 19 | 18 |
| 2010 | 20 | 32 |
| 2011 | 24 | 29 |
| 2012 | 30 | 27 |
| 2013 | 30 | 50 |
| 2014 | 37 | 39 |
| 2015 | 29 | 56 |
| 2016 | 34 | 48 |
| 2017 | 32 | 46 |
| 2018 | 41 | 76 |
| 2019 | 64 | 55 |
| 2020 | 74 | 64 |
| 2021 | 72 | 41 |
| 2022 | 50 | 26 |
| 2023 | 33 | 28 |
| 2024 | 30 | 28 |
| 2025 | 21 | 12 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Method for improving the cooling effectiveness of a gaseous coolant stream, and related articles of manufacture153US 6,234,755 B1General Electric Company · 2001
- Tip cap for a rotor blade and method of replacement140US 4,390,320 AGeneral Electric Company · 1983
- Turbine engine with an airfoil having a tip shelf outlet119US 10,436,038 B2General Electric Company · 2019
- Turbine blade squealer tip peripheral end wall with cooling passage arrangement116US 5,660,523 AGeneral Electric Company · 1997
- Cool tip blade110US 6,164,914 AGeneral Electric Company · 2000