F01D 5/145
Means for influencing boundary layers or secondary circulations
Official title: {Means for influencing boundary layers or secondary circulations (for compressors F04D29/68)}
F01D5/145 (Means for influencing boundary layers or secondary circulations) appears on 678 US grants and 712 published applications in this corpus.
Search patents in F01D- Granted patents
- 678
- Published applications
- 712
- Assignees
- 160
- Inventors
- 1,271
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 2 |
| 2002 | 18 | 10 |
| 2003 | 10 | 7 |
| 2004 | 10 | 18 |
| 2005 | 15 | 18 |
| 2006 | 8 | 19 |
| 2007 | 14 | 20 |
| 2008 | 8 | 29 |
| 2009 | 14 | 23 |
| 2010 | 11 | 29 |
| 2011 | 20 | 30 |
| 2012 | 33 | 16 |
| 2013 | 21 | 52 |
| 2014 | 27 | 53 |
| 2015 | 27 | 30 |
| 2016 | 27 | 41 |
| 2017 | 38 | 51 |
| 2018 | 31 | 34 |
| 2019 | 52 | 32 |
| 2020 | 43 | 53 |
| 2021 | 29 | 31 |
| 2022 | 48 | 19 |
| 2023 | 27 | 26 |
| 2024 | 29 | 24 |
| 2025 | 29 | 21 |
| 2026 | 14 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fan inlet case strut16 Jun 2026US 12,655,766 B1Rtx Corporation
- Fan casing or liner with interchangeable tip treatment segments26 May 2026US 12,638,024 B2Rolls-Royce North American Technologies Inc.
- Turbine module for a turbomachine12 May 2026US 12,624,639 B2MTU Aero Engines AG
- Blade member and structural member21 Apr 2026US 12,607,125 B2Nikon Corporation
- Fan casing or liner with interchangeable tip treatment segments3 Sep 2026US 2026/0258814 A1Rolls-Royce North American Technologies Inc.
- Airfoil and gas turbine including same6 Aug 2026US 2026/0226916 A1Doosan Enerbility Co., Ltd.
- Unducted propulsion system30 Jul 2026US 2026/0218650 A1General Electric Company
- Gas turbine engine with forward swept outlet guide vanes30 Jul 2026US 2026/0218668 A1General Electric Company
- Aeronautical thruster23 Jul 2026US 2026/0208853 A1Centre National de la Recherche Scientifique (CNRS)
Most cited
By later US patents
- Arrangement for controlling fluid jets injected into a fluid stream1,018US 7,976,213 B2United Technologies Corporation · 2011
- Reduction of turbomachinery noise149US 6,004,095 AMassachusetts Institute of Technology · 1999
- Bowed airfoil for the compression section of a rotary machine108US 5,088,892 AUnited Technologies Corporation · 1992
- Rotor blade with cooled integral platform96US 5,382,135 AUnited Technologies Corporation · 1995
- Twin rib turbine blade96US 6,059,530 AGeneral Electric Company · 2000