F01B 2250/00
Accessories of steam engines
Official title: Accessories of steam engines; Arrangements or control devices of pumps, compressors or condensers, insofar as they influence the functioning of the steam engines
F01B2250/00 (Accessories of steam engines) appears on 9 US grants and 6 published applications in this corpus.
Search patents in F01B- Granted patents
- 9
- Published applications
- 6
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01B 2250/001Valves for steam inlet or outletIndexing code9
- F01B 2250/002Valves, brakes, control or safety devices for steam enginesIndexing code2
- F01B 2250/003Apparatus for controlling receiver or condenser pressureIndexing code0
- F01B 2250/004Devices for draining or idling of steam cylinders or for uncoupling pistonIndexing code0
- F01B 2250/005Oil separators for steam enginesIndexing code0
- F01B 2250/006Arrangement of or controlling of piston pumps or compressors without crank shaftIndexing code0
- F01B 2250/007Condensing devices for steam enginesIndexing code0
- F01B 2250/008Surface condensers for so far as they influence the functioning of theIndexing code0
All 9 subgroupsShow fewer
Recent patents
- Steam engine27 Jan 2026US 12,535,005 B2Rd Estate GmbH & Co. KG
- Valve assembly18 Apr 2023US 11,629,789 B1
- Systems and methods for a piston engine including a recirculating system using supercritical carbon dioxide10 Jan 2023US 11,549,370 B2
- Systems and methods for a piston engine including a recirculating system using supercritical carbon dioxide13 Apr 2021US 10,975,697 B2
- High efficiency steam engine15 Sep 2020US 10,774,645 B1Thermal Power Recovery LLC
- Steam engine10 Jul 2025US 2025/0223905 A1Rd Estate GmbH & Co. KG
- Systems and Methods for a Piston Engine Including a Recirculating System Using Supercritical Carbon Dioxide15 Jul 2021US 2021/0215045 A1
- Systems and Methods for a Piston Engine Including a Recirculating System Using Supercritical Carbon Dioxide11 Mar 2021US 2021/0071529 A1
- High efficiency steam engine having improved steam cutoff control9 Aug 2018US 2018/0223703 A1Thermal Power Recovery LLC
- Rotary Valve Assembly11 Aug 2016US 2016/0230617 A1Microsteam, Inc.
Most cited
By later US patents
- High efficiency steam engine, steam expander and improved valves therefor9US 9,316,130 B1Thermal Power Recovery LLC · 2016
- High efficiency steam engine and steam expander6US 9,828,886 B1Thermal Power Recovery LLC · 2017
- High efficiency steam engine3US 10,774,645 B1Thermal Power Recovery LLC · 2020
- High efficiency steam engine having improved steam cutoff control2US 10,550,737 B2Thermal Power Recovery LLC · 2020
- Systems and methods for a piston engine including a recirculating system using supercritical carbon dioxide2US 10,975,697 B22021