F04D 29/18
Rotors
Official title: Rotors (specially for elastic fluids F04D29/26)
F04D29/18 (Rotors) appears on 2,340 US grants and 2,225 published applications in this corpus.
Search patents in F04D- Granted patents
- 2,340
- Published applications
- 2,225
- Assignees
- 1,067
- Inventors
- 4,168
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 26 | 0 |
| 1977 | 18 | 0 |
| 1978 | 13 | 0 |
| 1979 | 14 | 0 |
| 1980 | 7 | 0 |
| 1981 | 11 | 0 |
| 1982 | 9 | 0 |
| 1983 | 14 | 0 |
| 1984 | 12 | 0 |
| 1985 | 10 | 0 |
| 1986 | 12 | 0 |
| 1987 | 25 | 0 |
| 1988 | 25 | 0 |
| 1989 | 33 | 0 |
| 1990 | 21 | 0 |
| 1991 | 21 | 0 |
| 1992 | 31 | 0 |
| 1993 | 30 | 0 |
| 1994 | 25 | 0 |
| 1995 | 27 | 0 |
| 1996 | 32 | 0 |
| 1997 | 22 | 0 |
| 1998 | 30 | 0 |
| 1999 | 26 | 0 |
| 2000 | 37 | 0 |
| 2001 | 40 | 14 |
| 2002 | 54 | 25 |
| 2003 | 43 | 33 |
| 2004 | 28 | 42 |
| 2005 | 20 | 43 |
| 2006 | 28 | 33 |
| 2007 | 20 | 41 |
| 2008 | 32 | 44 |
| 2009 | 19 | 45 |
| 2010 | 21 | 50 |
| 2011 | 24 | 50 |
| 2012 | 40 | 57 |
| 2013 | 44 | 81 |
| 2014 | 39 | 72 |
| 2015 | 57 | 119 |
| 2016 | 66 | 169 |
| 2017 | 100 | 189 |
| 2018 | 104 | 139 |
| 2019 | 170 | 171 |
| 2020 | 149 | 130 |
| 2021 | 126 | 154 |
| 2022 | 148 | 123 |
| 2023 | 129 | 106 |
| 2024 | 127 | 118 |
| 2025 | 116 | 106 |
| 2026 | 65 | 71 |
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
- Liquid hydrogen pump impellor assembly6 Oct 2026US 12,753,770 B2ROLLS-ROYCE plc
- Multistage disc pump for multiphase fluids6 Oct 2026US 12,753,771 B2
- Side-channel machine (compressor, vacuum pump or blower) having an extraction duct in the stripper29 Sep 2026US 12,747,732 B2Gardner Denver Deutschland GmbH
- Non-occluding intravascular blood pump providing reduced hemolysis15 Sep 2026US 12,736,054 B2Procyrion, Inc.
- Pump Assembly1 Oct 2026US 2026/0298263 A1KSB SE & Co. KGaA
- Rotor for a fluid pump, and method and mold for manufacturing same24 Sep 2026US 2026/0286968 A1Ecp Entwicklungsgesellschaft Mbh
- Impeller pump and method24 Sep 2026US 2026/0286970 A1Pentair Flow Technologies, LLC
- Pump arrangement24 Sep 2026US 2026/0286983 A1ECP Entwicklungsgesselschaft mbH
- Water pump and humidifier17 Sep 2026US 2026/0275997 A1Suzhou BeiAng Smart Technology Co., Ltd.
Most cited
By later US patents
- Single-stage axial flow blood pump493US 4,846,152 ANimbus Medical, Inc. · 1989
- Self-deploying axial-flow pump introduced intravascularly for temporary cardiac support480US 6,533,716 B12003
- Helifoil pump441US 4,969,865 AAmerican BioMed, Inc. · 1990
- Heart assist device with expandable impeller pump411US 7,841,976 B2The Penn State Research Foundation · 2010
- Expandable impeller pump391US 7,393,181 B2Datascope Investment Corp. · 2008