F01K 19/00
Regenerating or otherwise treating steam exhausted from steam engine plant
Official title: Regenerating or otherwise treating steam exhausted from steam engine plant ({F01K3/006 takes precedence} plants characterised by use of means for storing steam in an alkali to increase steam pressure F01K5/00; returning condensate to boiler F22D)
F01K19/00 (Regenerating or otherwise treating steam exhausted from steam engine plant) appears on 193 US grants and 182 published applications in this corpus.
Search patents in F01K- Granted patents
- 193
- Published applications
- 182
- Assignees
- 91
- Inventors
- 280
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 4 |
| 2012 | 3 | 5 |
| 2013 | 0 | 4 |
| 2014 | 2 | 8 |
| 2015 | 3 | 16 |
| 2016 | 7 | 7 |
| 2017 | 13 | 8 |
| 2018 | 4 | 4 |
| 2019 | 11 | 10 |
| 2020 | 6 | 10 |
| 2021 | 11 | 6 |
| 2022 | 16 | 28 |
| 2023 | 21 | 22 |
| 2024 | 28 | 17 |
| 2025 | 15 | 18 |
| 2026 | 16 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thermal energy storage system coupled with a solid oxide electrolysis system6 Oct 2026US 12,753,710 B2Rondo Energy, Inc.
- Thermal energy storage system coupled with thermal power cycle systems8 Sep 2026US 12,729,632 B1Rondo Energy, Inc.
- Thermal energy storage systems for use in material processing1 Sep 2026US 12,723,524 B2Rondo Energy, Inc.
- Methods for material activation with thermal energy storage system18 Aug 2026US 12,709,998 B2Rondo Energy, Inc.
- Generate hydrogen as fuel at natural gas processing plant to reduce carbon dioxide emissions11 Aug 2026US 12,704,082 B2Saudi Arabian Oil Company
- Thermal Energy Storage with Fluid Flow Insulation16 Jul 2026US 2026/0201821 A1Rondo Energy, Inc.
- Steam Generation Device and Steam Generation Method2 Jul 2026US 2026/0185698 A1Hitachi, Ltd.
- Thermal energy storage system coupled with steam cracking system25 Jun 2026US 2026/0176985 A1Rondo Energy, Inc.
- Energy storage system and alumina calcination applications18 Jun 2026US 2026/0168411 A1Rondo Energy, Inc.
- Thermal energy storage systems for use in material processing2 Apr 2026US 2026/0092542 A1Rondo Energy, Inc.
Most cited
By later US patents
- High-temperature dual-source organic Rankine cycle with gas separations92US 8,046,999 B2Doty Scientific, Inc. · 2011
- Systems and methods for generating electricity via a pumped thermal energy storage system64US 11,187,112 B2Echogen Power Systems, LLC · 2021
- Systems and methods for generating electricity via a pumped thermal energy storage system53US 10,883,388 B2Echogen Power Systems, LLC · 2021
- Power plant52US 9,512,741 B2Fuji Electric Co., Ltd. · 2016
- Hybrid thermal power and desalination apparatus and methods43US 9,932,970 B12018