F04D 29/183
Semi axial flow rotors
Official title: {Semi axial flow rotors}
F04D29/183 (Semi axial flow rotors) appears on 66 US grants and 60 published applications in this corpus.
Search patents in F04D- Granted patents
- 66
- Published applications
- 60
- Assignees
- 39
- Inventors
- 110
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 3 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 0 |
| 2009 | 1 | 5 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 3 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 3 | 2 |
| 2019 | 0 | 5 |
| 2020 | 6 | 1 |
| 2021 | 1 | 5 |
| 2022 | 5 | 5 |
| 2023 | 7 | 3 |
| 2024 | 3 | 8 |
| 2025 | 6 | 3 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Submersible pump5 May 2026US 12,618,409 B2Vortex Pipe Systems LLC
- Efficient fan assembly7 Apr 2026US 12,595,806 B2Greenheck Fan Corporation
- Impeller for catheter pump10 Mar 2026US 12,569,668 B2Tc1 LLC
- Electrical submersible pump with single direction lubricant flow25 Nov 2025US 12,480,498 B2Baker Hughes Oilfield Operations LLC
- High volume axial flow electric submersible pump (ESP) pump stage20 May 2025US 12,305,494 B2Halliburton Energy Services.Inc.
- Submersible Semi-Axial Centrifugal Pump and Impeller for Such Pump27 Aug 2026US 2026/0251149 A1Xylem Europe GmbH
- Impeller for catheter pump16 Jul 2026US 2026/0199658 A1Tc1 LLC
- Systems and methods for pump-assisted blood circulation29 May 2025US 2025/0170387 A1Cardiodyme, Inc.
- Submersible pump1 May 2025US 2025/0137457 A1Vortex Pipe Systems LLC
- Efficient fan assembly13 Feb 2025US 2025/0052252 A1Greenheck Fan Corporation
Most cited
By later US patents
- Magnetically suspended and rotated impellor pump apparatus and method291US 4,688,998 A1987
- Impeller for catheter pump225US 8,721,517 B2Thoratec Corporation · 2014
- Conical logarithmic spiral viscosity pump144US 5,312,224 AInternational Business Machines Corporation · 1994
- Non-clogging, centrifugal, coaxial discharge pump135US 4,063,849 A1977
- Impeller for catheter pump83US 9,675,740 B2Tc1 LLC · 2017