F03
Machines or engines for liquids
Official title: Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for
F03 (Machines or engines for liquids) appears on 25,039 US grants and 29,488 published applications in this corpus.
Search patents in F03- Granted patents
- 25,039
- Published applications
- 29,488
- Assignees
- 7,203
- Inventors
- 39,012
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 193 | 0 |
| 1977 | 196 | 0 |
| 1978 | 226 | 0 |
| 1979 | 161 | 0 |
| 1980 | 225 | 0 |
| 1981 | 237 | 0 |
| 1982 | 234 | 0 |
| 1983 | 213 | 0 |
| 1984 | 213 | 0 |
| 1985 | 183 | 0 |
| 1986 | 156 | 0 |
| 1987 | 140 | 0 |
| 1988 | 166 | 0 |
| 1989 | 109 | 0 |
| 1990 | 93 | 0 |
| 1991 | 83 | 0 |
| 1992 | 93 | 0 |
| 1993 | 109 | 0 |
| 1994 | 85 | 0 |
| 1995 | 109 | 0 |
| 1996 | 97 | 0 |
| 1997 | 94 | 0 |
| 1998 | 104 | 0 |
| 1999 | 138 | 0 |
| 2000 | 150 | 0 |
| 2001 | 191 | 43 |
| 2002 | 179 | 185 |
| 2003 | 167 | 278 |
| 2004 | 225 | 366 |
| 2005 | 228 | 437 |
| 2006 | 273 | 521 |
| 2007 | 296 | 646 |
| 2008 | 332 | 799 |
| 2009 | 343 | 1080 |
| 2010 | 549 | 1611 |
| 2011 | 808 | 1872 |
| 2012 | 1028 | 1752 |
| 2013 | 1071 | 1656 |
| 2014 | 1196 | 1612 |
| 2015 | 1065 | 1664 |
| 2016 | 1070 | 1339 |
| 2017 | 1301 | 1275 |
| 2018 | 1122 | 1327 |
| 2019 | 1244 | 1472 |
| 2020 | 1262 | 1544 |
| 2021 | 1266 | 1468 |
| 2022 | 1267 | 1553 |
| 2023 | 1258 | 1426 |
| 2024 | 1439 | 1480 |
| 2025 | 1341 | 1192 |
| 2026 | 711 | 890 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subclasses
Granted patents
Recent patents
- Pumping device6 Oct 2026US 12,752,291 B2Tianzhou Medical (Suzhou) Co., Ltd
- Assembly for generating electricity in a production well of a hot fluid6 Oct 2026US 12,753,677 B2Affin AS
- Thermal energy storage system coupled with a solid oxide electrolysis system6 Oct 2026US 12,753,710 B2Rondo Energy, Inc.
- Submersible hydroelectric generator apparatus and method of operating same6 Oct 2026US 12,753,735 B2Static Hydro Energy (S.H.E.) Limited
- Wind turbine6 Oct 2026US 12,753,736 B2ODE Consulting UG (haftungsbeschränkt)
- Method and system for manufacturing a rotor blade for a wind turbine, computer program product and computer-readable storage medium8 Oct 2026US 2026/0307183 A1
- Performance of airfoils and hydrofoils8 Oct 2026US 2026/0307777 A1SJK Energy Solutions, LLC
- Crane with tower connection mechanism8 Oct 2026US 2026/0307952 A1Liftra IP Aps
- Windblade repair adhesive and a process for use thereof8 Oct 2026US 2026/0308429 A1Illinois Tool Works Inc.
- Apparatus utilizing shape-memory and self-assembly to plug relatively wide remote fractures8 Oct 2026US 2026/0308440 A1The Penn State Research Foundation
Most cited
By later US patents
- Conducting polymer actuator1,732US 6,249,076 B1Massachusetts Institute of Technology · 2001
- Electronically activated capture device1,383US 7,063,671 B2Boston Scientific Scimed, Inc. · 2006
- Wind turbine and a shaft for a wind turbine1,094US 8,664,792 B2Envision Energy (Denmark) ApS · 2014
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Device and method employing shape memory alloy491US 6,916,159 B2TheraSense, Inc. · 2005