F04D 17/02
Radial-flow pumps: having non-centrifugal stages
Official title: having non-centrifugal stages, e.g. centripetal
F04D17/02 (Radial-flow pumps: having non-centrifugal stages) appears on 381 US grants and 411 published applications in this corpus.
Search patents in F04D- Granted patents
- 381
- Published applications
- 411
- Assignees
- 234
- Inventors
- 912
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 4 |
| 2003 | 6 | 8 |
| 2004 | 5 | 6 |
| 2005 | 5 | 13 |
| 2006 | 6 | 14 |
| 2007 | 6 | 13 |
| 2008 | 5 | 9 |
| 2009 | 6 | 9 |
| 2010 | 6 | 13 |
| 2011 | 5 | 7 |
| 2012 | 12 | 24 |
| 2013 | 4 | 29 |
| 2014 | 19 | 21 |
| 2015 | 16 | 22 |
| 2016 | 18 | 21 |
| 2017 | 22 | 24 |
| 2018 | 17 | 24 |
| 2019 | 27 | 10 |
| 2020 | 10 | 18 |
| 2021 | 17 | 19 |
| 2022 | 21 | 32 |
| 2023 | 14 | 20 |
| 2024 | 22 | 26 |
| 2025 | 24 | 14 |
| 2026 | 4 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Extraction impeller for axial compressor6 Oct 2026US 12,753,769 B2GE Vernova Infrastructure Technology LLC
- Axial-centrifugal contra-rotating light weight, compact compression system23 Jun 2026US 12,662,960 B2Indian Institute of Technology Kharagpur
- Air blower assembly and ducted air conditioner16 Jun 2026US 12,655,995 B2Gree Electric Appliances, Inc. of Zhuhai
- Hybrid shroud impeller10 Mar 2026US 12,571,409 B2Rtx Corporation
- Tower crossflow fan with orientable supports16 Dec 2025US 12,497,970 B2Vornado Air, LLC
- Sirocco fan3 Sep 2026US 2026/0258805 A1LG Electronics Inc.
- Fan Impeller Mid-Segment, Cross-Flow Fan Impeller and Air Conditioner27 Aug 2026US 2026/0251160 A1Gree Electric Appliances, Inc. of Zhuhai
- Volute, fan and air conditioner30 Jul 2026US 2026/0218722 A1Gd Midea Air-Conditioning Equipment Co., Ltd.
- Dual-profile strong-suction vortex fan blade, fan and electronic device23 Jul 2026US 2026/0210379 A1Nanchang Huaqin Electronic Technology Co., Ltd.
- Hybrid shroud impeller25 Jun 2026US 2026/0177077 A1Rtx Corporation
Most cited
By later US patents
- Low noise centrifugal blower128US 4,419,049 ASgm Co., Ltd. · 1983
- Blower79US 5,266,004 AHitachi, Ltd. · 1993
- Cooling fan and image display apparatus75US 7,518,864 B2Sony Corporation · 2009
- High pressure ratio turbocharger73US 5,025,629 A1991
- Multi stage centrifugal impeller71US 4,502,837 AGeneral Electric Company · 1985