F04B 2027/184
Valve controlling parameter
Official title: {Valve controlling parameter}
F04B2027/184 (Valve controlling parameter) appears on 422 US grants and 268 published applications in this corpus.
Search patents in F04B- Granted patents
- 422
- Published applications
- 268
- Assignees
- 66
- Inventors
- 421
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 13 | 0 |
| 1989 | 24 | 0 |
| 1990 | 14 | 0 |
| 1991 | 20 | 0 |
| 1992 | 11 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 9 | 0 |
| 2000 | 22 | 0 |
| 2001 | 27 | 12 |
| 2002 | 35 | 20 |
| 2003 | 22 | 27 |
| 2004 | 20 | 20 |
| 2005 | 10 | 20 |
| 2006 | 13 | 18 |
| 2007 | 5 | 15 |
| 2008 | 6 | 8 |
| 2009 | 6 | 12 |
| 2010 | 8 | 7 |
| 2011 | 5 | 4 |
| 2012 | 5 | 6 |
| 2013 | 6 | 3 |
| 2014 | 4 | 4 |
| 2015 | 3 | 11 |
| 2016 | 2 | 3 |
| 2017 | 11 | 8 |
| 2018 | 1 | 4 |
| 2019 | 2 | 10 |
| 2020 | 10 | 17 |
| 2021 | 5 | 14 |
| 2022 | 17 | 13 |
| 2023 | 11 | 11 |
| 2024 | 15 | 1 |
| 2025 | 5 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Variable displacement swash plate type compressor and control method16 Sep 2025US 12,416,302 B2Hanon Systems
- Fluid control valve13 May 2025US 12,297,913 B2Eagle Industry Co., Ltd.
- Capacity control valve8 Apr 2025US 12,270,476 B2Eagle Industry Co., Ltd.
- Fluid control valve1 Apr 2025US 12,264,743 B2Eagle Industry Co., Ltd.
- Capacity control valve1 Apr 2025US 12,264,748 B2Eagle Industry Co., Ltd.
- Variable displacement swash plate type compressor control method and variable displacement swash plate type compressor controlled thereby29 Feb 2024US 2024/0068460 A1Hanon Systems
- Capacity control valve9 Nov 2023US 2023/0358331 A1Eagle Industry Co., Ltd.
- Valve21 Sep 2023US 2023/0296178 A1Eagle Industry Co., Ltd.
- Capacity control valve21 Sep 2023US 2023/0296187 A1Eagle Industry Co., Ltd.
- Valve7 Sep 2023US 2023/0279952 A1Eagle Industry Co., Ltd.
Most cited
By later US patents
- Variable displacement compressor control valve arrangement87US 4,428,718 AGeneral Motors Corporation · 1984
- Control system for variable displacement compressor85US 4,037,993 ABorg-Warner Corporation · 1977
- Control valve unit with independently operable valve mechanisms for variable displacement compressor77US 6,010,312 AKabushiki Kaisha Toyoda Jidoshokki Seiksakusho · 2000
- Variable capacity compressor68US 4,174,191 ABorg-Warner Corporation · 1979
- Displacement control apparatus for variable displacement compressor, displacement control method and compressor module67US 6,484,520 B2Kabushiki Kaisha Toyoda Jidoshokki Seisakusho · 2002