F03G 3/08
Spring, weight, inertia or like motors: other motors: using flywheels
Official title: using flywheels
F03G3/08 (Spring, weight, inertia or like motors: other motors: using flywheels) appears on 155 US grants and 226 published applications in this corpus.
Search patents in F03G- Granted patents
- 155
- Published applications
- 226
- Assignees
- 83
- Inventors
- 276
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 2 | 5 |
| 2005 | 1 | 3 |
| 2006 | 2 | 7 |
| 2007 | 2 | 6 |
| 2008 | 1 | 2 |
| 2009 | 0 | 7 |
| 2010 | 3 | 4 |
| 2011 | 2 | 5 |
| 2012 | 2 | 5 |
| 2013 | 4 | 6 |
| 2014 | 3 | 6 |
| 2015 | 5 | 4 |
| 2016 | 1 | 9 |
| 2017 | 5 | 5 |
| 2018 | 8 | 5 |
| 2019 | 1 | 13 |
| 2020 | 8 | 7 |
| 2021 | 16 | 24 |
| 2022 | 13 | 22 |
| 2023 | 16 | 14 |
| 2024 | 16 | 31 |
| 2025 | 23 | 18 |
| 2026 | 11 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- No funnel propless wind turbine and retrofit method29 Sep 2026US 12,747,722 B1
- Inertia flywheel assembly and system thereof8 Sep 2026US 12,729,754 B2Infiniforce, Inc.
- Flywheel18 Aug 2026US 12,710,029 B2Levistor Ltd
- Centrifugal gyroscopic devices, and associated systems and methods4 Aug 2026US 12,698,761 B2
- Flywheel magnetic lift and bearing system4 Aug 2026US 12,698,819 B2Torus Inc.
- Methods of generating electric power and a distributed network of a generator-turbine apparatus having a set of electric generators simultaneously driven by a gravity-force applied and moment imbalanced turbine8 Oct 2026US 2026/0309131 A1
- No funnel propless wind turbine and retrofit method1 Oct 2026US 2026/0298208 A1
- Mechanical renewable green energy production3 Sep 2026US 2026/0261182 A1Phos Global Energy Solutions, Inc.
- Energy management system and methods27 Aug 2026US 2026/0249712 A1
- Hts bearing and flywheel systems and methods6 Aug 2026US 2026/0226942 A1Revterra Corporation
Most cited
By later US patents
- Regenerative energy storage and conversion system73US 6,748,737 B22004
- Methods and apparatus for powering a vehicle58US 10,787,089 B12020
- Methods and apparatus for powering a vehicle53US 11,072,254 B12021
- Device in hydraulically driven machines51US 4,707,988 A1987
- Apparatus for producing a force51US 4,712,439 A1987