F01D 15/00
Adaptations of machines or engines for special use
Official title: Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
F01D15/00 (Adaptations of machines or engines for special use) appears on 2,723 US grants and 3,240 published applications in this corpus.
Search patents in F01D- Granted patents
- 2,723
- Published applications
- 3,240
- Assignees
- 829
- Inventors
- 4,733
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 17 | 0 |
| 1997 | 7 | 0 |
| 1998 | 19 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 30 | 6 |
| 2002 | 14 | 27 |
| 2003 | 22 | 23 |
| 2004 | 25 | 46 |
| 2005 | 19 | 24 |
| 2006 | 24 | 45 |
| 2007 | 28 | 52 |
| 2008 | 28 | 51 |
| 2009 | 30 | 51 |
| 2010 | 49 | 74 |
| 2011 | 31 | 65 |
| 2012 | 40 | 53 |
| 2013 | 49 | 106 |
| 2014 | 51 | 107 |
| 2015 | 71 | 142 |
| 2016 | 90 | 251 |
| 2017 | 115 | 218 |
| 2018 | 166 | 230 |
| 2019 | 205 | 222 |
| 2020 | 211 | 232 |
| 2021 | 218 | 219 |
| 2022 | 199 | 231 |
| 2023 | 236 | 214 |
| 2024 | 225 | 217 |
| 2025 | 233 | 189 |
| 2026 | 129 | 145 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01D 15/10Adaptations for driving, or combinations with, electric generators1,881
- F01D 15/12Combinations with mechanical gearing504
- F01D 15/08Adaptations for driving, or combinations with, pumps281
- F01D 15/06Adaptations for driving, or combinations with, hand-held tools or the like control95
- F01D 15/005Adaptations for refrigeration plants86
- F01D 15/02Adaptations for driving vehicles73
Recent patents
- Methods of modifying existing gas turbine engine design to create a combined storage engine and simple cycle peaker product6 Oct 2026US 12,753,719 B2Powerphase International, LLC
- Air system for aircraft propulsion system electric machine29 Sep 2026US 12,747,026 B2Rtx Corporation
- Flexible support structure for a geared architecture gas turbine engine29 Sep 2026US 12,747,675 B2Rtx Corporation
- Device for generating energy from compressed air, system having such a device and method for operating the system22 Sep 2026US 12,742,414 B2Everllence SE
- Mixture separation in bottoming cycle22 Sep 2026US 12,742,415 B2Rtx Corporation
- Rotor turning apparatus for a steam turbine generator8 Oct 2026US 2026/0309045 A1
- Turbine engine tip clearance control utilizing electric machine8 Oct 2026US 2026/0309046 A1Rtx Corporation
- Double offset reduction gearbox with motor drive for turboprop8 Oct 2026US 2026/0309090 A1Pratt & Whitney Canada Corp.
- Methods of generating electric power and a distributed network of a generator-turbine apparatus having a set of electric generators simultaneously driven by a gravity-force applied and moment imbalanced turbine8 Oct 2026US 2026/0309131 A1
- Power generation system8 Oct 2026US 2026/0309424 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Mobile electric power generation for hydraulic fracturing of subsurface geological formations496US 9,534,473 B2Evolution Well Services, LLC · 2017
- System for pumping hydraulic fracturing fluid using electric pumps342US 9,410,410 B2U.S. Well Services, LLC · 2016
- Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas341US 9,140,110 B2Evolution Well Services, LLC · 2015
- Mobile electric power generation for hydraulic fracturing of subsurface geological formations287US 9,562,420 B2Evolution Well Services, LLC · 2017
- Mobile power generation system including fixture assembly254US 10,371,012 B2On-Power, Inc. · 2019