F04D 25/028
The driving means being a planetary gear
Official title: {the driving means being a planetary gear}
F04D25/028 (The driving means being a planetary gear) appears on 129 US grants and 127 published applications in this corpus.
Search patents in F04D- Granted patents
- 129
- Published applications
- 127
- Assignees
- 73
- Inventors
- 231
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 3 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 7 |
| 2014 | 1 | 6 |
| 2015 | 6 | 8 |
| 2016 | 7 | 19 |
| 2017 | 7 | 16 |
| 2018 | 11 | 5 |
| 2019 | 11 | 8 |
| 2020 | 16 | 9 |
| 2021 | 9 | 11 |
| 2022 | 12 | 11 |
| 2023 | 7 | 6 |
| 2024 | 8 | 4 |
| 2025 | 7 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Direct-drive system for cooling system fans, exhaust blowers and pumps19 May 2026US 12,631,410 B2Prime Datum Development Company, LLC
- Turbomachine with cantilevered rotor wheel for industrial power plants21 Apr 2026US 12,607,131 B2Exergy International S.R.L.
- Integrated bearing systems for dynamically supporting shafts in pump systems4 Nov 2025US 12,460,647 B2General Electric Company
- Helical seal for multi-stage compressor4 Nov 2025US 12,460,655 B2Honeywell International Inc.
- Axial flux motor driven pump systems for pressurizing fluid in closed loop systems23 Sep 2025US 12,421,968 B2General Electric Company
- Hybrid integrally geared centrifugal compressor pump18 Jun 2026US 2026/0168501 A1Sundyne International S.A.
- Fan structure7 May 2026US 2026/0126047 A1Cooler Master Co., Ltd.
- Gas turbine engine with high speed low pressure turbine section and bearing support features6 Nov 2025US 2025/0341175 A1Rtx Corporation
- Fan wheel18 Sep 2025US 2025/0290519 A1Ie Assets GmbH & Co. KG
- Helical seal for multi-stage compressor11 Sep 2025US 2025/0283476 A1Honeywell International Inc.
Most cited
By later US patents
- Pump system and method of starting pump174US 10,221,856 B2BJ Services Company · 2019
- Fluid rotary machine99US 4,105,372 AHitachi, Ltd. · 1978
- Toothed wheel gear unit for a compressor system26US 5,382,132 ABHS-Voith Getriebetechnik GmbH · 1995
- Multispeed drive for engine-cooling fan25US 6,013,003 ABaruffaldi S.p.A. · 2000
- Compact centrifugal compressor25US 6,634,853 B1Sea Solar Power · 2003