F03G 7/122
Of closed energy loops
Official title: {of closed energy loops}
F03G7/122 (Of closed energy loops) appears on 31 US grants and 79 published applications in this corpus.
Search patents in F03G- Granted patents
- 31
- Published applications
- 79
- Assignees
- 9
- Inventors
- 108
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 5 |
| 2006 | 2 | 3 |
| 2007 | 0 | 7 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 2 | 4 |
| 2011 | 1 | 7 |
| 2012 | 1 | 3 |
| 2013 | 1 | 3 |
| 2014 | 1 | 4 |
| 2015 | 0 | 6 |
| 2016 | 1 | 3 |
| 2017 | 3 | 4 |
| 2018 | 3 | 8 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 4 |
| 2022 | 1 | 1 |
| 2023 | 0 | 3 |
| 2024 | 2 | 3 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air compression system13 Jan 2026US 12,523,214 B2
- Gravitational-to-kinetic energy converter27 May 2025US 12,313,043 B2Matuna Holdings Ltd
- Induced flow generator apparatus for power generation29 Oct 2024US 12,129,772 B1Spar Systems Inc.
- Energy-saving device for rapidly and infinitely compressing air14 May 2024US 11,982,282 B2
- Turbine powered electrical submersible pump system19 Jul 2022US 11,391,132 B2Saudi Arabian Oil Company
- Gearbox X force Power plant25 Dec 2025US 2025/0388079 A1
- Gravitational-to-kinetic-energy converter11 Sep 2025US 2025/0283452 A1M&F Technology Partners, Ltd
- Gravitational-to-kinetic energy converter3 Apr 2025US 2025/0109738 A1Matuna Holdings Ltd
- Closed cycle lift force turbine31 Oct 2024US 2024/0360839 A1
- Air compression system, requiring on mechanical compressor, electricity, or other external energy to operate12 Sep 2024US 2024/0301822 A1
Most cited
By later US patents
- Ram air electrical generator/charging system44US 6,373,145 B12002
- Multiple installation varie gated generators for fossil fuel-and electric-powered vehicles40US 6,700,215 B22004
- Electrical energy from live loads29US 7,043,904 B22006
- Hydroelectric turbine-based power-generating system for vessels and submarines23US 7,955,148 B22011
- Energy conversion system20US 4,159,426 A1979