F03G 7/04
Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise
Official title: using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence)
F03G7/04 (Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise) appears on 396 US grants and 352 published applications in this corpus.
Search patents in F03G- Granted patents
- 396
- Published applications
- 352
- Assignees
- 164
- Inventors
- 605
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 20 | 0 |
| 1981 | 15 | 0 |
| 1982 | 16 | 0 |
| 1983 | 9 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 4 |
| 2003 | 4 | 5 |
| 2004 | 2 | 4 |
| 2005 | 0 | 4 |
| 2006 | 3 | 8 |
| 2007 | 4 | 9 |
| 2008 | 4 | 7 |
| 2009 | 4 | 16 |
| 2010 | 4 | 18 |
| 2011 | 15 | 26 |
| 2012 | 10 | 18 |
| 2013 | 16 | 21 |
| 2014 | 15 | 21 |
| 2015 | 15 | 25 |
| 2016 | 19 | 16 |
| 2017 | 23 | 9 |
| 2018 | 7 | 10 |
| 2019 | 9 | 10 |
| 2020 | 7 | 12 |
| 2021 | 15 | 16 |
| 2022 | 16 | 25 |
| 2023 | 13 | 18 |
| 2024 | 20 | 31 |
| 2025 | 24 | 11 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Utilizing alternative energy for water purification, water disposal, industrial heat, and electricity18 Aug 2026US 12,709,553 B2Katz Water Tech, LLC
- Recursive and encapsulated heat harvesting system19 May 2026US 12,631,162 B1Jemm's Labs
- Process for recovering lithium from brines28 Apr 2026US 12,612,901 B2Terralithium LLC
- Heat pump engine14 Apr 2026US 12,601,328 B2
- Apparatus for energy conversion31 Mar 2026US 12,590,550 B2G-En Pte Ltd
- Self-contained blockchain mining systems, high-energy-density computing systems, and methods of use10 Sep 2026US 2026/0266268 A1Oceanbit Inc.
- Recursive and Encapsulated Heat Harvesting System20 Aug 2026US 2026/0243237 A1Jemm's Labs
- Systems and methods for power generation or direct air capture30 Jul 2026US 2026/0218687 A1Innovator Energy, LLC
- Low-grade heat engine system2 Jul 2026US 2026/0185508 A1First Pecos, LLC
- System and method for generating energy28 May 2026US 2026/0146592 A1
Most cited
By later US patents
- Submersible power generators and method of operating thereof331US 9,651,032 B2General Electric Company · 2017
- Maritime power plant system with processes for producing, storing and consuming regenerative energy134US 6,100,600 A2000
- Thermodynamic power conversion cycle and methods of use131US 7,900,450 B2Echogen Power Systems, LLC · 2011
- Method and equipment for obtaining energy from oil wells99US 5,117,908 AKSB Aktiengsellschaft · 1992
- Power source for subsea oil wells98US 4,112,687 A1978