F03G 7/047
Environmental heat plants or otec plants using heat pumps
Official title: {Environmental heat plants or OTEC plants using heat pumps}
F03G7/047 (Environmental heat plants or otec plants using heat pumps) appears on 11 US grants and 14 published applications in this corpus.
Search patents in F03G- Granted patents
- 11
- Published applications
- 14
- Assignees
- 6
- Inventors
- 27
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 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 | 0 | 0 |
| 1988 | 0 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat pump engine14 Apr 2026US 12,601,328 B2
- Venturi device with forced induction10 Mar 2026US 12,571,341 B2Zero Nox, Inc.
- Enhanced ocean thermal energy conversion (EOTEC) system5 Mar 2024US 11,920,570 B1
- Power generation process25 Jan 2022US 11,231,021 B2Saltkraft ApS
- Energy supply system30 Nov 2021US 11,187,211 B2Intertech Corporation
- Heat pump engine5 Mar 2026US 2026/0063113 A1
- Venturi device with forced induction13 Jun 2024US 2024/0191650 A1Zero Nox, Inc.
- Modular sustainable power plant for harvesting non-volcanic geothermal heat13 Apr 2023US 2023/0111831 A1
- System for electricity generation using heat pump and hydro turbines28 Apr 2022US 2022/0128025 A1
- Energy supply system13 May 2021US 2021/0140411 A1Intertech Corporation
Most cited
By later US patents
- Thermodynamic power conversion cycle and methods of use131US 7,900,450 B2Echogen Power Systems, LLC · 2011
- Apparatuses and methods for thermodynamic energy transfer, storage and retrieval42US 9,038,390 B12015
- Integral separator start-up system for a vapor generator with constant pressure furnace circuitry17US 4,099,384 AFoster Wheeler Energy Corporation · 1978
- Integral separator start-up system for a vapor generator with constant pressure furnace circuitry12US 3,972,193 AFoster Wheeler Energy Corporation · 1976
- Thermal torque engine3US 9,488,128 B22016