F04B 53/128
Annular disc valves
Official title: {Annular disc valves}
F04B53/128 (Annular disc valves) appears on 26 US grants and 10 published applications in this corpus.
Search patents in F04B- Granted patents
- 26
- Published applications
- 10
- Assignees
- 18
- Inventors
- 41
- Latest grant
- 25 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 3 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Piston pump and seal ring25 May 2021US 11,015,595 B2Graco Minnesota Inc.
- Mechanically actuated traveling valve12 Jan 2021US 10,890,178 B2Maxflu Pumps Corp.
- Reciprocating compressor5 Jan 2021US 10,883,484 B2LG Electronics Inc.
- Mechanically actuated traveling valve25 Dec 2018US 10,161,395 B2Maxflu Pumps Corp.
- Superimposed standing valve20 Nov 2018US 10,132,312 B1
- Improved hand pump assembly16 Nov 2023US 2023/0366385 A1
- Piston pump and seal ring17 Oct 2019US 2019/0316582 A1Graco Minnesota Inc.
- Mechanically actuated traveling valve28 Feb 2019US 2019/0063429 A1Maxflu Pumps Corp.
- Reciprocating compressor9 Aug 2018US 2018/0223822 A1LG Electronics Inc.
- Mechanically actuated traveling valve24 Mar 2016US 2016/0084049 A1Maxflu Pumps Corp.
Most cited
By later US patents
- Wave motor48US 4,076,463 A1978
- Dispenser device with valve piston pump39US 4,236,651 ATrisa Burstenfabrik AG · 1980
- Fountain toothbrush having bristle carrier easily producible by injection molding17US 4,068,974 ATrisa Burstenfabrik AG Triengen · 1978
- High pressure pump16US 3,945,770 A1976
- Pump for high viscosity lubricants with improved priming feature14US 4,249,868 AMcNeil Corporation · 1981