F04D 5/002
Regenerative pumps
Official title: {Regenerative pumps (for elastic fluids F04D23/008)}
F04D5/002 (Regenerative pumps) appears on 446 US grants and 341 published applications in this corpus.
Search patents in F04D- Granted patents
- 446
- Published applications
- 341
- Assignees
- 173
- Inventors
- 689
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 16 | 0 |
| 1996 | 17 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 23 | 0 |
| 2001 | 18 | 4 |
| 2002 | 21 | 12 |
| 2003 | 13 | 22 |
| 2004 | 14 | 24 |
| 2005 | 11 | 22 |
| 2006 | 10 | 17 |
| 2007 | 18 | 27 |
| 2008 | 2 | 18 |
| 2009 | 12 | 11 |
| 2010 | 10 | 15 |
| 2011 | 8 | 5 |
| 2012 | 11 | 11 |
| 2013 | 9 | 13 |
| 2014 | 2 | 13 |
| 2015 | 10 | 9 |
| 2016 | 7 | 16 |
| 2017 | 11 | 14 |
| 2018 | 9 | 22 |
| 2019 | 13 | 8 |
| 2020 | 13 | 11 |
| 2021 | 7 | 10 |
| 2022 | 12 | 17 |
| 2023 | 15 | 8 |
| 2024 | 10 | 7 |
| 2025 | 5 | 4 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Side-channel machine (compressor, vacuum pump or blower) having an extraction duct in the stripper29 Sep 2026US 12,747,732 B2Gardner Denver Deutschland GmbH
- Configurable bi-directional airflow fan21 Apr 2026US 12,607,203 B2Cisco Technology, Inc.
- Low noise blower7 Apr 2026US 12,595,800 B1Hyundai Motor Company
- Regenerative multi-stage compressor21 Oct 2025US 12,448,977 B2
- Regenerative blower17 Jun 2025US 12,331,749 B2Fisher & Paykel Healthcare Limited
- Fuel system23 Jul 2026US 2026/0210293 A1ROLLS-ROYCE plc
- Radial pump stage, sensor cleaning device and vehicle25 Dec 2025US 2025/0389276 A1Schaeffler Technologies AG & Co. KG
- Two-Stage Pump27 Nov 2025US 2025/0361864 A1Truma Gerätetechnik GmbH & Co. KG
- Regenerative blower15 May 2025US 2025/0154956 A1Fisher & Paykel Healthcare Limited
- Configurable bi-directional airflow fan20 Feb 2025US 2025/0059984 A1Cisco Technology, Inc.
Most cited
By later US patents
- Sealless integral-motor pump with regenerative impeller disk131US 6,280,157 B1Flowserve Management Company · 2001
- Ultra-thin pump and cooling system including the pump82US 6,808,371 B2Matsushita Electric Industrial Co., Ltd. · 2004
- Regenerative fuel pump48US 5,702,229 AWalbro Corporation · 1997
- In-take fuel pump reservoir47US 6,231,318 B1Walbro Corporation · 2001
- Regenerative fuel pump43US 5,257,916 AWalbro Corporation · 1993