F02B 63/041
Linear electric generators
Official title: {Linear electric generators}
F02B63/041 (Linear electric generators) appears on 147 US grants and 127 published applications in this corpus.
Search patents in F02B- Granted patents
- 147
- Published applications
- 127
- Assignees
- 62
- Inventors
- 197
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 1 |
| 2002 | 3 | 3 |
| 2003 | 2 | 5 |
| 2004 | 5 | 2 |
| 2005 | 3 | 3 |
| 2006 | 3 | 8 |
| 2007 | 3 | 1 |
| 2008 | 4 | 3 |
| 2009 | 1 | 5 |
| 2010 | 3 | 5 |
| 2011 | 2 | 3 |
| 2012 | 1 | 9 |
| 2013 | 9 | 5 |
| 2014 | 6 | 5 |
| 2015 | 8 | 3 |
| 2016 | 2 | 4 |
| 2017 | 4 | 8 |
| 2018 | 3 | 3 |
| 2019 | 5 | 10 |
| 2020 | 12 | 10 |
| 2021 | 10 | 4 |
| 2022 | 6 | 10 |
| 2023 | 8 | 5 |
| 2024 | 6 | 5 |
| 2025 | 5 | 6 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for optimizing an internal combustion engine8 Sep 2026US 12,729,641 B2Crow Technologies S.R.L.
- High-power core system25 Aug 2026US 12,719,334 B2Mainspring Energy, Inc.
- Integrated piston assembly for an electric machine2 Jun 2026US 12,646,997 B2Hyliion Holdings Corp.
- Integrated linear generator system17 Feb 2026US 12,556,063 B2Mainspring Energy, Inc.
- Energy storage and conversion in linear generators18 Nov 2025US 12,473,855 B2Mainspring Energy, Inc.
- Energy storage and conversion in linear generators9 Jul 2026US 2026/0194003 A1Mainspring Energy, Inc.
- System for optimizing an internal combustion engine23 Oct 2025US 2025/0327417 A1Crow Technologies S.R.L.
- Integrated piston assembly for an electric machine16 Oct 2025US 2025/0323552 A1Hyliion Holdings Corp.
- Linear electrical machine16 Oct 2025US 2025/0323553 A1Libertine FPE Ltd
- Linear generator system having a polygonal layout4 Sep 2025US 2025/0279696 A1Mainspring Energy, Inc.
Most cited
By later US patents
- Free-piston engine103US 6,199,519 B1Sandia Corporation · 2001
- Method and apparatus for converting a conventional internal combustion engine into a high speed electric motor and generator77US 4,631,455 A1986
- Free piston internal combustion engine74US 5,775,273 ASunPower Corporation · 1998
- Method and apparatus for producing electrical energy from a cyclic combustion process utilizing coupled pistons which reciprocate in unison73US 4,532,431 ACUV "Progress" · 1985
- Free piston engine with electrical power output68US 6,541,875 B1Caterpillar Inc. · 2003