F04B 39/1033
Annular disc valves
Official title: {annular disc valves}
F04B39/1033 (Annular disc valves) appears on 63 US grants and 49 published applications in this corpus.
Search patents in F04B- Granted patents
- 63
- Published applications
- 49
- Assignees
- 49
- Inventors
- 123
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 2 | 2 |
| 2015 | 1 | 2 |
| 2016 | 3 | 5 |
| 2017 | 1 | 1 |
| 2018 | 3 | 2 |
| 2019 | 2 | 4 |
| 2020 | 3 | 2 |
| 2021 | 3 | 5 |
| 2022 | 2 | 1 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vacuum pump and valve system for use with vacuum-retention system11 Aug 2026US 12,703,556 B2Gstc LLC
- Head module for air compressor and air compressor including same2 Jun 2026US 12,644,446 B2MDX Co., Ltd.
- Air pump with relief device configured for dispensing trace amount of air16 Apr 2024US 11,959,470 B2
- Poppet valve and method of manufacturing valve components of a poppet valve7 Mar 2023US 11,598,433 B2Burckhardt Compression AG
- Linear compressor10 Jan 2023US 11,549,498 B2LG Electronics Inc.
- Vacuum pump and valve system for use with vacuum-retention system15 Jan 2026US 2026/0015151 A1Gstc LLC
- Head module for air compressor and air compressor including same18 Dec 2025US 2025/0382953 A1MDX Co., Ltd.
- Pressure relieving valve assembly, inflatable support assembly and a method of inflating an inflatable support member13 Nov 2025US 2025/0345584 A1
- Check Valve for a Refrigerant Compressor15 May 2025US 2025/0154955 A1Bitzer Kuhlmaschinenbau GmbH
- Refrigerant Compressor17 Apr 2025US 2025/0122868 A1Bitzer Kuhlmaschinenbau GmbH
Most cited
By later US patents
- Green communities61US 10,184,465 B2EnisEnerGen, LLC · 2019
- Compressor valve35US 4,483,363 A1984
- Compressor valve29US 5,511,583 ADover Resources, Inc. · 1996
- Compressor valve system22US 4,834,632 ATecumseh Products Company · 1989
- Plate valve, particularly for piston compressors22US 5,678,603 AHoerbiger Ventilwerke Aktiengesellschaft · 1997