F04D 25/024
The driving means being assisted by a power recovery turbine
Official title: {the driving means being assisted by a power recovery turbine}
F04D25/024 (The driving means being assisted by a power recovery turbine) appears on 302 US grants and 370 published applications in this corpus.
Search patents in F04D- Granted patents
- 302
- Published applications
- 370
- Assignees
- 151
- Inventors
- 833
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 3 |
| 2003 | 5 | 5 |
| 2004 | 3 | 2 |
| 2005 | 2 | 5 |
| 2006 | 4 | 5 |
| 2007 | 0 | 4 |
| 2008 | 2 | 4 |
| 2009 | 2 | 7 |
| 2010 | 2 | 5 |
| 2011 | 3 | 4 |
| 2012 | 5 | 13 |
| 2013 | 8 | 22 |
| 2014 | 9 | 15 |
| 2015 | 7 | 34 |
| 2016 | 15 | 44 |
| 2017 | 24 | 24 |
| 2018 | 30 | 28 |
| 2019 | 28 | 25 |
| 2020 | 30 | 23 |
| 2021 | 16 | 18 |
| 2022 | 19 | 21 |
| 2023 | 18 | 19 |
| 2024 | 24 | 21 |
| 2025 | 17 | 13 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Motor-generator assisted turbocharging systems for use with internal combustion engines and control method therefor56US 5,906,098 ATurbodyne Systems, Inc. · 1999
- Rotor and bearing system for electrically assisted turbocharger51US 6,449,950 B1Honeywell International Inc. · 2002
- Low speed high pressure ratio turbocharger45US 6,062,028 AAllied-Signal Inc. · 2000
- Compact turbocharger45US 6,739,845 B22004
- Variable speed drive motor system with inverter control43US 4,514,991 ACarrier Corporation · 1985