F05D 2270/03
In variable speed operation
Official title: in variable speed operation
F05D2270/03 (In variable speed operation) appears on 53 US grants and 63 published applications in this corpus.
Search patents in F05D- Granted patents
- 53
- Published applications
- 63
- Assignees
- 26
- Inventors
- 103
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 0 | 2 |
| 2013 | 3 | 3 |
| 2014 | 3 | 1 |
| 2015 | 0 | 4 |
| 2016 | 0 | 7 |
| 2017 | 4 | 2 |
| 2018 | 3 | 4 |
| 2019 | 2 | 5 |
| 2020 | 6 | 8 |
| 2021 | 10 | 3 |
| 2022 | 3 | 5 |
| 2023 | 4 | 3 |
| 2024 | 3 | 3 |
| 2025 | 4 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multistage pumping system for adaptive offloading of a liquid from a container23 Jun 2026US 12,663,009 B2Flowserve Pte. Ltd.
- Hydrogen fuelled gas turbine engine5 May 2026US 12,618,361 B2ROLLS-ROYCE plc
- Gas recovery systems and methods4 Nov 2025US 12,460,293 B2RASIRC, Inc.
- Hydrogen fuelled gas turbine engine7 Oct 2025US 12,435,663 B2ROLLS-ROYCE plc
- System and method for efficiently determining a phase shift in a propulsion system12 Aug 2025US 12,384,523 B2General Electric Company
- Control method and control device for a hybrid turbine engine9 Jul 2026US 2026/0194018 A1Safran Aircraft Engines
- Control method and control device for a hybrid turbine engine9 Jul 2026US 2026/0194023 A1Safran Aircraft Engines
- Hydrogen fuelled gas turbine engine11 Sep 2025US 2025/0283428 A1ROLLS-ROYCE plc
- Hydrogen fuelled gas turbine engine11 Sep 2025US 2025/0283429 A1ROLLS-ROYCE plc
- Multistage pumping system for adaptive offloading of a liquid from a container14 Aug 2025US 2025/0257731 A1Flowserve Pte. Ltd.
Most cited
By later US patents
- Ram air turbine system50US 6,127,758 AAlliedSignal Inc. · 2000
- Fan array fan section in air-handling systems35US 7,137,775 B2Huntair, Inc. · 2006
- Grow light fan33US 9,901,039 B12018
- Fan array fan section in air-handling systems26US 7,179,046 B2Huntair, Inc. · 2007
- Fan array fan section in air-handling systems19US 7,914,252 B2Huntair, Inc. · 2011