Y10T 137/2678
Four port reversing valve
Y10T137/2678 (Four port reversing valve) appears on 10 US grants and 5 published applications in this corpus.
Search patents in Y10T- Granted patents
- 10
- Published applications
- 5
- Assignees
- 8
- Inventors
- 18
- Latest grant
- 5 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas circulation apparatus, gas circulation method, pneumatic apparatus, and semiconductor device5 Nov 2024US 12,135,045 B2Changxin Memory Technologies, Inc.
- Rotary four-way reversing valve with low pressure drop and low leakage25 Jun 2019US 10,330,359 B2Shanghai Goldair Electric System Co., Ltd.
- Controlling device for hydraulic consumers21 May 2013US 8,443,827 B2Hydac Filtertechnik GmbH
- Self-actuating control valve for a bed pad or seat pad24 May 2005US 6,895,988 B2Grant Airmass Corporation
- Valve assembly and airconditioning system including same10 Dec 2002US 6,491,063 B1Ben-Ro Industry and Development Ltd.
- Gas circulation apparatus, gas circulation method, pneumatic apparatus, and semiconductor device9 Feb 2023US 2023/0041577 A1Changxin Memory Technologies, Inc.
- Rotary Four-way Reversing Valve with Low Pressure Drop and Low Leakage17 Nov 2016US 2016/0334151 A1Shanghai Goldair Electric System Co., Ltd.
- Controlling device for hydraulic consumers18 Mar 2010US 2010/0065135 A1Hydac Filtertechnik GmbH
- Self-actuating control valve for a bed pad or seat pad11 Mar 2004US 2004/0045601 A1Grant Airmass Corporation
- Valve assembly and airconditioning system including same15 Jan 2004US 2004/0007008 A1
Most cited
By later US patents
- Valve assembly and airconditioning system including same27US 6,491,063 B1Ben-Ro Industry and Development Ltd. · 2002
- Pneumatic circuit arrangement9US 4,181,141 A1980
- Self-actuating control valve for a bed pad or seat pad5US 6,895,988 B2Grant Airmass Corporation · 2005
- Control circuit for pneumatic phase4US 4,205,700 ALa Telemelanique Electrique · 1980
- Integrated pneumatic logic module3US 4,112,962 A1978