F03B 17/005
Installations wherein the liquid circulates in a closed loop
Official title: {Installations wherein the liquid circulates in a closed loop (F03B13/06 takes precedence); Alleged perpetua mobilia of this or similar kind (perpetua mobilia using hydrostatic thrust or buoyancy F03B17/04)}
F03B17/005 (Installations wherein the liquid circulates in a closed loop) appears on 160 US grants and 290 published applications in this corpus.
Search patents in F03B- Granted patents
- 160
- Published applications
- 290
- Assignees
- 46
- Inventors
- 353
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 4 | 1 |
| 2003 | 1 | 5 |
| 2004 | 1 | 1 |
| 2005 | 2 | 6 |
| 2006 | 1 | 3 |
| 2007 | 1 | 6 |
| 2008 | 1 | 5 |
| 2009 | 2 | 13 |
| 2010 | 2 | 14 |
| 2011 | 2 | 11 |
| 2012 | 4 | 15 |
| 2013 | 4 | 14 |
| 2014 | 13 | 19 |
| 2015 | 7 | 14 |
| 2016 | 7 | 23 |
| 2017 | 10 | 18 |
| 2018 | 8 | 21 |
| 2019 | 11 | 17 |
| 2020 | 11 | 14 |
| 2021 | 10 | 9 |
| 2022 | 3 | 14 |
| 2023 | 5 | 14 |
| 2024 | 10 | 14 |
| 2025 | 13 | 6 |
| 2026 | 3 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Looping water device3 Mar 2026US 12,565,872 B1Yu Ding Enterprise Co., Ltd
- Non-resistive circulation to elevated containers20 Jan 2026US 12,529,387 B2CyberIT Systems AS
- Hydropower recycle system13 Jan 2026US 12,523,194 B2Green Vigor Limited
- Seesaw-type hydroelectric power generation device18 Nov 2025US 12,473,895 B2
- Hydro-mechanical energy transfer system with dynamic water tanks and turbine generator11 Nov 2025US 12,467,429 B2
- Self-adaptive hydropower plant17 Sep 2026US 2026/0275956 A1
- Steep pyramidal structure of electricity3 Sep 2026US 2026/0258774 A1
- Ffwn clean energy power plant9 Jul 2026US 2026/0194035 A1
- Closed-loop apparatus for electrical energy generation2 Jul 2026US 2026/0189103 A1
- Infrastructure for renewable energy power generation including infrastructure for thermal cycle based at least in part on gravitation force7 May 2026US 2026/0126027 A1Energy Carnot Innovators Corporation
Most cited
By later US patents
- Hydro electric generating system80US 4,443,707 A1984
- Liquid powered, closed loop power generating system and process for using same62US 4,291,232 A1981
- Portable electricity generating gravity driven wheel system56US 7,222,487 B12007
- System and method for converting electrical energy into pressurized air and converting pressurized air into electricity56US 7,579,700 B12009
- Fluid dynamic energy producing device55US 4,767,938 A1988