F04D 27/0284
Conjoint control of two or more different functions
Official title: {Conjoint control of two or more different functions}
F04D27/0284 (Conjoint control of two or more different functions) appears on 94 US grants and 56 published applications in this corpus.
Search patents in F04D- Granted patents
- 94
- Published applications
- 56
- Assignees
- 66
- Inventors
- 183
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 3 |
| 2009 | 2 | 1 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 3 | 2 |
| 2013 | 3 | 7 |
| 2014 | 3 | 1 |
| 2015 | 2 | 2 |
| 2016 | 3 | 4 |
| 2017 | 2 | 2 |
| 2018 | 2 | 3 |
| 2019 | 4 | 5 |
| 2020 | 3 | 2 |
| 2021 | 3 | 3 |
| 2022 | 3 | 4 |
| 2023 | 5 | 3 |
| 2024 | 3 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Building system with automatic chiller anti-surge control30 Sep 2025US 12,429,266 B2Tyco Fire & Security GmbH
- Compressor device and method for controlling such a compressor device10 Dec 2024US 12,163,526 B2Atlas Copco Airpower, Naamloze Vennootschap
- Gas compressor with a plurality of air realease systems each having an air release valve and an air regulating valve28 May 2024US 11,994,138 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Compressor system27 Feb 2024US 11,913,476 B2Mitsubishi Heavy Industries, Ltd.
- Remote control smart blower24 Oct 2023US 11,795,959 B2Turbowin Co., Ltd.
- Dynamic compressor system and methods of operation12 Mar 2026US 2026/0071630 A1Aerospace Carbon Solutions LLC
- Pump system21 Mar 2024US 2024/0093691 A1
- Refrigeration system11 Jan 2024US 2024/0011673 A1Mayekawa Mfg. Co., Ltd.
- Compressor device and method for controlling such a compressor device7 Dec 2023US 2023/0392603 A1Atlas Copco Airpower, Naamloze Vennootschap
- Building system with automatic chiller anti-surge control7 Dec 2023US 2023/0392846 A1Johnson Controls Tyco IP Holdings LLP
Most cited
By later US patents
- Control system for regulating large capacity rotating machinery131US 4,151,725 ABorg-Warner Corporation · 1979
- Method and apparatus for detecting surge in centrifugal compressors driven by electric motors90US 4,581,900 ABorg-Warner Corporation · 1986
- Active control of unsteady motion phenomena in turbomachinery82US 5,005,353 AROLLS-ROYCE plc · 1991
- Control method and apparatus for a centrifugal chiller using a variable speed impeller motor drive77US 5,355,691 AAmerican Standard Inc. · 1994
- Apparatus for the prevention of critical process variable excursions in one or more turbomachines75US 7,594,386 B2Compressor Controls Corporation · 2009