F04D 29/684
By fluid injection
Official title: {by fluid injection}
F04D29/684 (By fluid injection) appears on 208 US grants and 222 published applications in this corpus.
Search patents in F04D- Granted patents
- 208
- Published applications
- 222
- Assignees
- 110
- Inventors
- 434
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 4 |
| 2005 | 2 | 5 |
| 2006 | 3 | 5 |
| 2007 | 1 | 5 |
| 2008 | 4 | 6 |
| 2009 | 1 | 10 |
| 2010 | 4 | 8 |
| 2011 | 5 | 11 |
| 2012 | 12 | 5 |
| 2013 | 5 | 6 |
| 2014 | 7 | 6 |
| 2015 | 4 | 12 |
| 2016 | 9 | 12 |
| 2017 | 8 | 9 |
| 2018 | 8 | 16 |
| 2019 | 11 | 7 |
| 2020 | 13 | 17 |
| 2021 | 15 | 20 |
| 2022 | 29 | 18 |
| 2023 | 12 | 9 |
| 2024 | 16 | 11 |
| 2025 | 12 | 10 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Centrifugal compressor with liquid injection23 Jun 2026US 12,663,023 B2Daikin Industries, Ltd.
- Axial turbomachine compressor with controlled recirculation between the inner shroud and the rotor23 Dec 2025US 12,504,020 B2Safran Aero Boosters SA
- Device to reduce turbulent flow skin friction using carbon dioxide, riblets, and suction holes9 Dec 2025US 12,492,717 B1
- Fan having a step diffuser2 Dec 2025US 12,486,857 B2Ziehl-Abegg SE
- Ice reduction mechanism for turbofan engine11 Nov 2025US 12,467,408 B2General Electric Company
- Centrifugal compressor and turbocharger13 Aug 2026US 2026/0235140 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Compressor with optimized interstage flow inlet9 Apr 2026US 2026/0098537 A1Tyco Fire & Security GmbH
- Recirculator casing treatment for gas turbine engines26 Mar 2026US 2026/0085617 A1Pratt & Whitney Canada Corp.
- Devices and methods for guiding bleed air in a turbofan engine26 Mar 2026US 2026/0085640 A1Pratt & Whitney Canada Corp.
- Device to reduce turbulent flow skin friction using carbon dioxide, riblets, and suction holes26 Feb 2026US 2026/0055785 A1
Most cited
By later US patents
- Reduction of turbomachinery noise149US 6,004,095 AMassachusetts Institute of Technology · 1999
- Fan shroud with integral air supply124US 5,881,685 ABoard of Trustees operating Michigan State University · 1999
- Cooling fan shroud121US 5,762,034 ABoard of Trustees operating Michigan State University · 1998
- High tip speed gas turbine engine81US 10,815,886 B2General Electric Company · 2020
- Low noise permeable airfoil71US 6,139,259 AGeneral Electric Company · 2000