F04D 25/02
Units comprising pumps and their driving means
F04D25/02 (Units comprising pumps and their driving means) appears on 7,741 US grants and 9,347 published applications in this corpus.
Search patents in F04D- Granted patents
- 7,741
- Published applications
- 9,347
- Assignees
- 2,400
- Inventors
- 14,283
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 13 | 0 |
| 1978 | 20 | 0 |
| 1979 | 7 | 0 |
| 1980 | 15 | 0 |
| 1981 | 10 | 0 |
| 1982 | 10 | 0 |
| 1983 | 10 | 0 |
| 1984 | 20 | 0 |
| 1985 | 22 | 0 |
| 1986 | 10 | 0 |
| 1987 | 18 | 0 |
| 1988 | 26 | 0 |
| 1989 | 32 | 0 |
| 1990 | 35 | 0 |
| 1991 | 30 | 0 |
| 1992 | 36 | 0 |
| 1993 | 51 | 0 |
| 1994 | 42 | 0 |
| 1995 | 59 | 0 |
| 1996 | 47 | 0 |
| 1997 | 43 | 0 |
| 1998 | 50 | 0 |
| 1999 | 87 | 0 |
| 2000 | 121 | 0 |
| 2001 | 138 | 27 |
| 2002 | 136 | 112 |
| 2003 | 117 | 128 |
| 2004 | 114 | 170 |
| 2005 | 87 | 180 |
| 2006 | 117 | 214 |
| 2007 | 96 | 252 |
| 2008 | 107 | 261 |
| 2009 | 92 | 275 |
| 2010 | 126 | 268 |
| 2011 | 154 | 255 |
| 2012 | 201 | 314 |
| 2013 | 182 | 383 |
| 2014 | 223 | 376 |
| 2015 | 260 | 498 |
| 2016 | 242 | 516 |
| 2017 | 322 | 509 |
| 2018 | 416 | 554 |
| 2019 | 520 | 642 |
| 2020 | 508 | 515 |
| 2021 | 429 | 558 |
| 2022 | 513 | 510 |
| 2023 | 520 | 534 |
| 2024 | 525 | 473 |
| 2025 | 475 | 458 |
| 2026 | 286 | 365 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04D 25/06The pump being electrically driven4,185
- F04D 25/08The working fluid being air3,524
- F04D 25/04The pump being fluid-driven564
- F04D 25/024The driving means being assisted by a power recovery turbine302
- F04D 25/026With a magnetic coupling137
- F04D 25/028The driving means being a planetary gear129
- F04D 25/022Comprising a yielding coupling84
Recent patents
- Pump device and method for carrying out a service in a pump device6 Oct 2026US 12,753,767 B2Herborner Pumpentechnik Gmbh & Co KG
- Fan6 Oct 2026US 12,753,768 B2Levitronix LLC
- Ceiling fan with a quick connect assembly6 Oct 2026US 12,753,775 B2Hunter Fan Company
- Integrated inflator/deflator air pump, mounting structure and inflatable product6 Oct 2026US 12,753,776 B2Jiangsu Guorun Electric Co., Ltd.
- Stator arrangement for a radial flux motor6 Oct 2026US 12,756,248 B2BorgWarner Inc.
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
- Variable speed pumping system and method8 Oct 2026US 2026/0309157 A1Pentair Water Pool and Spa, Inc.
- Fan motor8 Oct 2026US 2026/0309164 A1LG Electronics Inc.
- Household appliance having an improved fan and motor assembly and fan and motor assembly for same8 Oct 2026US 2026/0309165 A1Omachron Intellectual Property Inc.
- Engine cooling fan motor for vehicle8 Oct 2026US 2026/0312466 A1New Motech Co., Ltd.
Most cited
By later US patents
- Air flow-producing device, such as a vacuum cleaner or a blower1,158US 7,712,182 B2Milwaukee Electric Tool Corporation · 2010
- Compact low noise efficient blower for CPAP devices351US 7,866,944 B2ResMed Motor Technologies Inc. · 2011
- Blower with bearing tube333US 8,636,479 B2ResMed Motor Technologies Inc. · 2014
- Air control system for air bed275US 4,890,344 A1990
- Air control system for an air bed273US 5,509,154 ASelect Comfort Corporation · 1996