F04D 25/04
The pump being fluid-driven
Official title: the pump being fluid-driven {(pumps driven by exhaust gases F02B37/00, F02B39/00; turbochargers F02C6/12)}
F04D25/04 (The pump being fluid-driven) appears on 564 US grants and 608 published applications in this corpus.
Search patents in F04D- Granted patents
- 564
- Published applications
- 608
- Assignees
- 242
- Inventors
- 1,163
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 3 | 0 |
| 2001 | 11 | 1 |
| 2002 | 9 | 9 |
| 2003 | 12 | 10 |
| 2004 | 8 | 21 |
| 2005 | 15 | 13 |
| 2006 | 8 | 20 |
| 2007 | 9 | 17 |
| 2008 | 8 | 15 |
| 2009 | 10 | 27 |
| 2010 | 6 | 17 |
| 2011 | 19 | 27 |
| 2012 | 13 | 11 |
| 2013 | 17 | 21 |
| 2014 | 18 | 14 |
| 2015 | 11 | 33 |
| 2016 | 18 | 50 |
| 2017 | 22 | 75 |
| 2018 | 39 | 51 |
| 2019 | 51 | 36 |
| 2020 | 40 | 31 |
| 2021 | 35 | 23 |
| 2022 | 23 | 26 |
| 2023 | 25 | 20 |
| 2024 | 21 | 23 |
| 2025 | 21 | 10 |
| 2026 | 8 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flexible support structure for a geared architecture gas turbine engine29 Sep 2026US 12,747,675 B2Rtx Corporation
- Transportation vehicle22 Sep 2026US 12,742,411 B2Hitachi Construction Machinery Co., Ltd.
- Compressor train of chemical plants and method of operating compressor train of chemical plants12 May 2026US 12,624,702 B2Mitsubishi Heavy Industries Compressor Corporation
- Device and method for liquefying a fluid such as hydrogen and/or helium14 Apr 2026US 12,601,539 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Monolithic shaft for cryogenic turbo machine, cryogenic turbo machine and method for manufacturing24 Mar 2026US 12,584,490 B2Cryostar SAS
- Ventilation device3 Sep 2026US 2026/0257534 A1Flettner Ventilator Limited
- Magnetic levitation propeller type of a gas injector and a photoresist removing processing chamber with the same20 Aug 2026US 2026/0243265 A1VM Inc.
- Hygienic steam compressor30 Jul 2026US 2026/0218714 A1SPX Flow Technology Danmark A/S
- Transportation Vehicle9 Jul 2026US 2026/0194001 A1Hitachi Construction Machinery Co., Ltd.
- Geared turbofan with overspeed protection2 Jul 2026US 2026/0185459 A1Rtx Corporation
Most cited
By later US patents
- Very high speed radial inflow hydraulic turbine109US 5,471,965 A1995
- Thermally insulating turbine coupling88US 8,840,359 B2The United States of America as represented by the Secretary of the Navy · 2014
- Geared architecture for high speed and small volume fan drive turbine87US 8,747,055 B2United Technologies Corporation · 2014
- Wind turbines86US 4,648,801 AJames Howden & Company Limited · 1987
- Aircraft environmental control system with auxiliary power output79US 4,503,666 ARockwell International Corporation · 1985