F04B 2027/1845
Crankcase pressure
Official title: {Crankcase pressure}
F04B2027/1845 (Crankcase pressure) appears on 98 US grants and 59 published applications in this corpus.
Search patents in F04B- Granted patents
- 98
- Published applications
- 59
- Assignees
- 22
- Inventors
- 136
- Latest grant
- 8 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 4 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 2 |
| 2014 | 2 | 3 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 5 | 7 |
| 2018 | 0 | 1 |
| 2019 | 2 | 3 |
| 2020 | 3 | 7 |
| 2021 | 2 | 11 |
| 2022 | 12 | 3 |
| 2023 | 3 | 4 |
| 2024 | 6 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Capacity control valve8 Oct 2024US 12,110,882 B2Eagle Industry Co., Ltd.
- Swash plate compressor30 Jul 2024US 12,049,881 B2Hanon Systems
- Capacity control valve2 Jul 2024US 12,025,237 B2Eagle Industry Co., Ltd.
- Capacity control valve25 Jun 2024US 12,018,663 B2Eagle Industry Co., Ltd.
- Capacity control valve18 Jun 2024US 12,012,948 B2Eagle Industry Co., Ltd.
- Swash plate compressor29 Jun 2023US 2023/0204021 A1Hanon Systems
- Capacity control valve22 Jun 2023US 2023/0193889 A1Eagle Industry Co., Ltd.
- Capacity control valve22 Jun 2023US 2023/0194007 A1Eagle Industry Co., Ltd.
- Capacity control valve1 Jun 2023US 2023/0167814 A1Eagle Industry Co., Ltd.
- Capacity control valve13 Oct 2022US 2022/0325709 A1Eagle Industry Co., Ltd.
Most cited
By later US patents
- Control system for variable displacement compressor85US 4,037,993 ABorg-Warner Corporation · 1977
- Variable angle wobble plate type compressor which maintains the crankcase pressure at a predetermined value59US 4,687,419 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1987
- Displacement control valve53US 8,079,827 B2Eagle Industry Co., Ltd. · 2011
- Capacity control valve52US 8,021,124 B2Eagle Industry Co., Ltd. · 2011
- Variable displacement wobble plate type compressor with wobble angle control unit48US 4,685,866 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1987