F04B 53/103
Flat-annular type disc valves
Official title: {Flat-annular type disc valves}
F04B53/103 (Flat-annular type disc valves) appears on 57 US grants and 41 published applications in this corpus.
Search patents in F04B- Granted patents
- 57
- Published applications
- 41
- Assignees
- 35
- Inventors
- 92
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 3 |
| 2018 | 2 | 2 |
| 2019 | 2 | 9 |
| 2020 | 2 | 3 |
| 2021 | 9 | 2 |
| 2022 | 4 | 1 |
| 2023 | 2 | 4 |
| 2024 | 1 | 1 |
| 2025 | 2 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- High pressure reciprocating pump apparatus214US 4,878,815 A1989
- Piston or plunger pump67US 4,616,983 AUraca Pumpenfabrik GmbH & Co. KG · 1986
- Reciprocating pump63US 4,174,194 A1979
- High pressure pump valve assembly61US 5,037,276 AFlow International Corporation · 1991
- High pressure reciprocating pump57US 6,231,323 B1Jetstream of Houston, Inc. · 2001