F03D 9/28
The apparatus being a pump or a compressor
Official title: the apparatus being a pump or a compressor
F03D9/28 (The apparatus being a pump or a compressor) appears on 346 US grants and 401 published applications in this corpus.
Search patents in F03D- Granted patents
- 346
- Published applications
- 401
- Assignees
- 154
- Inventors
- 627
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 5 |
| 2003 | 0 | 1 |
| 2004 | 3 | 5 |
| 2005 | 2 | 5 |
| 2006 | 2 | 14 |
| 2007 | 5 | 16 |
| 2008 | 6 | 12 |
| 2009 | 5 | 18 |
| 2010 | 9 | 33 |
| 2011 | 14 | 28 |
| 2012 | 20 | 46 |
| 2013 | 31 | 43 |
| 2014 | 33 | 34 |
| 2015 | 15 | 25 |
| 2016 | 15 | 24 |
| 2017 | 20 | 12 |
| 2018 | 19 | 14 |
| 2019 | 9 | 9 |
| 2020 | 9 | 12 |
| 2021 | 8 | 4 |
| 2022 | 6 | 8 |
| 2023 | 10 | 10 |
| 2024 | 4 | 13 |
| 2025 | 8 | 6 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low-speed high-torque hydrostatic powertrain28 Jul 2026US 12,692,836 B2Purdue Research Foundation
- Dual-power hydraulic roof bolter16 Jun 2026US 12,655,762 B2Hebei Jinglong Intelligent Equipment Co., Ltd.
- Wind-based power generation system9 Jun 2026US 12,650,109 B2
- Venturi wind power21 Apr 2026US 12,607,165 B2
- Wind turbine generator with hydraulic pump21 Apr 2026US 12,607,166 B2Delft Offshore Turbine B.V.
- Simultaneous electricity generation and low-energy-intensive water desalination using a hydraulic wind turbine2 Jul 2026US 2026/0183713 A1
- System and methods for oceanic and atmospheric carbon dioxide and climate management, algal fostering, and initiation and maintenance of fisheries by deeper nutrient rich water pumping5 Feb 2026US 2026/0036111 A1
- Reservoir-regulating digital load control29 Jan 2026US 2026/0028958 A1Lone Gull Holdings, Ltd.
- A system and method for generating and storing energy from wind25 Dec 2025US 2025/0389252 A1
- Manufacturing Cementitious Bodies on Floating Platforms12 Jun 2025US 2025/0188901 A1RCAM Technologies, Inc.
Most cited
By later US patents
- Scavenger energy converter system its new applications and its control systems239US 6,327,994 B12001
- Water-mist blower cooling system and its new applications215US 6,293,121 B12001
- Natural energy conversion, storage and electricity generation system162US 4,206,608 A1980
- Energy storage system122US 3,996,741 A1976
- Windmills106US 3,952,723 ABrowning Engineering Corporation · 1976