F04B 39/1086
Flat annular reed valves
Official title: {flat annular reed valves}
F04B39/1086 (Flat annular reed valves) appears on 46 US grants and 31 published applications in this corpus.
Search patents in F04B- Granted patents
- 46
- Published applications
- 31
- Assignees
- 33
- Inventors
- 114
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 0 | 4 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 2 | 4 |
| 2022 | 2 | 1 |
| 2023 | 2 | 2 |
| 2024 | 4 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Valve reed, compressor, and vehicle3 Sep 2026US 2026/0258799 A1Zhejiang Yaoming Technology Co., Ltd.
- Air compressor structure24 Jul 2025US 2025/0237207 A1Unik World Industrial Co., Ltd.
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- Valve seat unit30 Jan 2025US 2025/0035216 A1Mayekawa Mfg. Co., Ltd.
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Most cited
By later US patents
- Piston type compressor with improved suction reed valve stopper116US 4,749,340 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1988
- Compressor valve system22US 4,834,632 ATecumseh Products Company · 1989
- Valve plate assembly for refrigeration compressors18US 4,470,774 ACopeland Corporation · 1984
- Piston type compressor for air conditioning unit having asymmetric valve mechanism16US 4,781,540 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1988
- Low reexpansion valve system15US 5,174,735 ATecumseh Products Company · 1992