F02G 2255/00
Heater tubes
F02G2255/00 (Heater tubes) appears on 88 US grants and 53 published applications in this corpus.
Search patents in F02G- Granted patents
- 88
- Published applications
- 53
- Assignees
- 42
- Inventors
- 151
- Latest grant
- 18 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 3 |
| 2012 | 0 | 4 |
| 2013 | 1 | 1 |
| 2014 | 2 | 0 |
| 2015 | 3 | 4 |
| 2016 | 1 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 3 | 2 |
| 2020 | 4 | 8 |
| 2021 | 6 | 2 |
| 2022 | 2 | 6 |
| 2023 | 3 | 2 |
| 2024 | 5 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and apparatus for energy conversion18 Feb 2025US 12,228,094 B2Hyliion Holdings Corp.
- Engine apparatus and method for operation29 Oct 2024US 12,129,812 B2Hyliion Holdings Corp.
- Stirling cycle machine1 Oct 2024US 12,104,552 B2DEKA Products Limited Partnership
- System for recovery of energy from a residual gas28 May 2024US 11,994,086 B2Texel Technologies AB
- Constant density heat exchanger and system for energy conversion7 May 2024US 11,976,610 B2Hyliion Holdings Corp.
- Hot-gas free-piston stirling engine with efficient hot air inlet2 Apr 2026US 2026/0092576 A1Exowatt, Inc.
- Stirling cycle machine23 Jan 2025US 2025/0027461 A1DEKA Products Limited Partnership
- Monolithic heat-exchanger bodies16 May 2024US 2024/0159201 A1Hyliion Holdings Corp.
- System for recovery of energy from a residual gas15 Feb 2024US 2024/0052798 A1Swedish Stirling AB
- Constant density heat exchanger and system for energy conversion20 Jul 2023US 2023/0228229 A1General Electric Company
Most cited
By later US patents
- Stirling engine combustor77US 4,352,269 AMechanical Technology Incorporated · 1982
- Solar powered Stirling engine33US 4,707,990 AStirling Thermal Motors, Inc. · 1987
- Heat exchanger for a Stirling engine32US 4,662,176 AMitsubishi Denki Kabushiki Kaisha · 1987
- Heater head for stirling engine31US 4,527,394 A1985
- Stirling engine29US 6,161,381 ASIPRA Patententwicklungs- u. Beteilgungsgesellschaft mbH · 2000