F03G 7/008
Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise
Official title: {characterised by the actuating element (actuating elements for mechanical power producing mechanism using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like F03G7/061)}
F03G7/008 (Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise) appears on 387 US grants and 448 published applications in this corpus.
Search patents in F03G- Granted patents
- 387
- Published applications
- 448
- Assignees
- 271
- Inventors
- 987
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 1 | 3 |
| 2003 | 3 | 2 |
| 2004 | 0 | 3 |
| 2005 | 1 | 10 |
| 2006 | 5 | 10 |
| 2007 | 6 | 18 |
| 2008 | 7 | 15 |
| 2009 | 6 | 18 |
| 2010 | 15 | 25 |
| 2011 | 22 | 30 |
| 2012 | 20 | 26 |
| 2013 | 25 | 26 |
| 2014 | 12 | 17 |
| 2015 | 21 | 23 |
| 2016 | 16 | 9 |
| 2017 | 12 | 16 |
| 2018 | 16 | 27 |
| 2019 | 12 | 26 |
| 2020 | 21 | 18 |
| 2021 | 18 | 17 |
| 2022 | 22 | 27 |
| 2023 | 18 | 34 |
| 2024 | 18 | 19 |
| 2025 | 42 | 24 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F03G 7/012Electro-chemical actuators233
- F03G 7/015Actuators using the difference in osmotic pressure between fluids68
- F03G 7/016Photosensitive actuators37
- F03G 7/011Actuators having a material for absorbing or desorbing a gas26
- F03G 7/009Actuators with elements stretchable when contacted with liquid rich in ions, with19
- F03G 7/017Actuators comprising biological materials8
Recent patents
- Buoyant compressed air energy storage25 Aug 2026US 12,716,400 B2Black & Veatch Corporation
- Automotive screen deployment system11 Aug 2026US 12,703,230 B2Toyota Jidosha Kabushiki Kaisha
- Method for converting osmotic energy into hydraulic energy and for desalination14 Jul 2026US 12,678,737 B2Centre National De La Recherche Scientifique
- Planar photonic resonant motor9 Jun 2026US 12,650,559 B2QOPSYS S.r.l.
- Systems and methods of generating low-frequency and persistent haptics using low-voltage and high-pressure flexible electroosmotic actuators21 Apr 2026US 12,608,084 B2Meta Platforms Technologies, LLC
- Thermo-electrochemical converter with pressure exchange energy recovery20 Aug 2026US 2026/0243236 A1Jtec Energy, Inc.
- Substrate comprising slots for holding optical components of a laser cavity6 Aug 2026US 2026/0229832 A1Ecole Polytechnique Fédérale de Lausenne (EPFL)
- Series elastic actuator9 Jul 2026US 2026/0194049 A1Hyundai Motor Company
- Salinity gradient grade-scale energy storage method and apparatus26 Feb 2026US 2026/0054222 A1Purdue Research Foundation
- Medicalimagingcompatibleradiolucentactuationofarticulating roboticmusculature13 Nov 2025US 2025/0345138 A1
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
- Soft actuators and artificial muscles184US 6,109,852 AUniversity of New Mexico · 2000
- Actuators using double-layer charging of high surface area materials139US 6,555,945 B1AlliedSignal Inc. · 2003
- Fluidic lens with reduced optical aberration136US 8,605,361 B2Holochip Corporation · 2013