F04D 27/0223
Control schemes therefor
Official title: {Control schemes therefor}
F04D27/0223 (Control schemes therefor) appears on 146 US grants and 134 published applications in this corpus.
Search patents in F04D- Granted patents
- 146
- Published applications
- 134
- Assignees
- 91
- Inventors
- 360
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 3 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 2 | 4 |
| 2013 | 0 | 5 |
| 2014 | 3 | 6 |
| 2015 | 5 | 7 |
| 2016 | 4 | 7 |
| 2017 | 10 | 15 |
| 2018 | 2 | 11 |
| 2019 | 12 | 9 |
| 2020 | 14 | 15 |
| 2021 | 12 | 8 |
| 2022 | 12 | 10 |
| 2023 | 9 | 7 |
| 2024 | 8 | 5 |
| 2025 | 6 | 9 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems of compressor control with surge avoidance and response7 Jul 2026US 12,674,487 B2
- Control device that detects surging30 Jun 2026US 12,669,130 B2Mitsubishi Heavy Industries, Ltd.
- Aero-engine surge active control system based on fuzzy controller switching17 Mar 2026US 12,577,916 B2Dalian University of Technology
- Compressor stall mitigation6 Jan 2026US 12,516,635 B2General Electric Company
- Actuating device, having two valves which are connected in parallel, for the sensitive and full range regulation of any volumetric flow28 Oct 2025US 12,454,959 B2
- Anti-surge control in a centrifugal compressor working with co2 in supercritical conditions based on flow measurement at discharge6 Aug 2026US 2026/0226906 A1Nuovo Pignone Tecnologie Srl
- Multi-stage compressor system with anti-surge arrangement, and method23 Jul 2026US 2026/0210371 A1Nuovo Pignone Tecnologie Srl
- Dynamic compressor system and methods of operation12 Mar 2026US 2026/0071630 A1Aerospace Carbon Solutions LLC
- Methods and systems of compressor control with surge avoidance and response22 May 2025US 2025/0164568 A1Garrett Transportation I Inc.
- System having a gas seal and method for operating the system3 Apr 2025US 2025/0109797 A1Siemens Energy Global GmbH & Co. KG
Most cited
By later US patents
- Surge prevention control system for dynamic compressors87US 5,798,941 AWoodward Governor Company · 1998
- Method and apparatus for preventing surge in a dynamic compressor70US 4,949,276 ACompressor Controls Corporation · 1990
- Surge control and recovery for a centrifugal compressor59US 5,306,116 AIngersoll-Rand Company · 1994
- Bleed valve control44US 5,385,012 AROLLS-ROYCE plc · 1995
- Apparatus for compressor air extraction41US 5,155,993 AGeneral Electric Company · 1992