F03B 17/04
Alleged perpetua mobilia
Official title: Alleged perpetua mobilia {(with closed loop circulation or similar F03B17/005)}
F03B17/04 (Alleged perpetua mobilia) appears on 104 US grants and 214 published applications in this corpus.
Search patents in F03B- Granted patents
- 104
- Published applications
- 214
- Assignees
- 29
- Inventors
- 224
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 3 |
| 2003 | 0 | 3 |
| 2004 | 2 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 9 |
| 2007 | 1 | 7 |
| 2008 | 1 | 6 |
| 2009 | 1 | 13 |
| 2010 | 2 | 16 |
| 2011 | 10 | 10 |
| 2012 | 6 | 10 |
| 2013 | 5 | 11 |
| 2014 | 7 | 12 |
| 2015 | 4 | 16 |
| 2016 | 3 | 4 |
| 2017 | 6 | 13 |
| 2018 | 2 | 10 |
| 2019 | 5 | 18 |
| 2020 | 3 | 7 |
| 2021 | 7 | 7 |
| 2022 | 3 | 9 |
| 2023 | 7 | 7 |
| 2024 | 7 | 7 |
| 2025 | 9 | 8 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating liquid filled wheel system21 Jul 2026US 12,687,148 B1
- Tank structures and fluid displacement devices14 Jul 2026US 12,680,529 B1
- System and method for converting potential energy into kinetic energy using buoyancy14 Jul 2026US 12,680,530 B1
- Communicating fluid vessel engine systems5 May 2026US 12,618,392 B2
- Non-resistive circulation to elevated containers20 Jan 2026US 12,529,387 B2CyberIT Systems AS
- Buoyancy-driven power generation device and its power generation method therfor23 Jul 2026US 2026/0210326 A1
- Force deflection arrangement2 Jul 2026US 2026/0185501 A1
- Communicating fluid vessel engine systems2 Apr 2026US 2026/0092596 A1
- A hydro-dynamic electric machine having tandem water towers for use with a plurality of shuttles to generate electricity5 Feb 2026US 2026/0036109 A1Gravitas E2P Inc.
- Bicycle-Like Pressure-Differential Engine Apparatus9 Oct 2025US 2025/0314229 A1
Most cited
By later US patents
- Gravity-actuated fluid displacement power generator44US 3,934,964 A1976
- Gravity and buoyancy driven power generators39US 4,718,232 A1988
- Buoyancy and gravitation motor32US 5,944,480 A1999
- Buoyancy-driven electric power generator30US 6,734,574 B22004
- Sealed shaft gravity buoyancy energy system and method of use thereof30US 7,134,283 B22006