F04B 53/143
Sealing provided on the piston
Official title: {Sealing provided on the piston}
F04B53/143 (Sealing provided on the piston) appears on 399 US grants and 424 published applications in this corpus.
Search patents in F04B- Granted patents
- 399
- Published applications
- 424
- Assignees
- 256
- Inventors
- 874
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 2 |
| 2002 | 5 | 8 |
| 2003 | 6 | 2 |
| 2004 | 2 | 4 |
| 2005 | 3 | 5 |
| 2006 | 1 | 5 |
| 2007 | 4 | 6 |
| 2008 | 6 | 9 |
| 2009 | 1 | 8 |
| 2010 | 6 | 15 |
| 2011 | 4 | 18 |
| 2012 | 12 | 13 |
| 2013 | 11 | 10 |
| 2014 | 11 | 17 |
| 2015 | 11 | 15 |
| 2016 | 13 | 17 |
| 2017 | 13 | 36 |
| 2018 | 11 | 31 |
| 2019 | 31 | 30 |
| 2020 | 28 | 30 |
| 2021 | 24 | 25 |
| 2022 | 19 | 20 |
| 2023 | 17 | 27 |
| 2024 | 29 | 30 |
| 2025 | 21 | 27 |
| 2026 | 21 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating reciprocating piston pump with a barrel cam6 Oct 2026US 12,753,745 B2HTI Technology and Industries, Inc.
- Electric cylinder device6 Oct 2026US 12,753,747 B2Advics Co., Ltd.
- Syringe pump6 Oct 2026US 12,753,756 B2Fluid Metering, Inc.
- Fluid compression apparatus and filling station8 Sep 2026US 12,729,104 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Fluid retention apparatus for fluid end of positive displacement pump and related method25 Aug 2026US 12,716,412 B2
- Unibody bypass plunger and valve cage24 Sep 2026US 2026/0286816 A1Flowco MasterCo LLC
- Piston of a membrane filtration system24 Sep 2026US 2026/0286954 A1Salinity Solutions Ltd
- Piston sealing ring assembly having a gap cover element13 Aug 2026US 2026/0235203 A1Mainspring Energy, Inc.
- Cryogenic pump30 Jul 2026US 2026/0218692 A1Chart Energy & Chemicals, Inc.
- Pumping apparatus11 Jun 2026US 2026/0160238 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Infusion pump system with disposable cartridge having pressure venting and pressure feedback253US 8,287,495 B2Tandem Diabetes Care, Inc. · 2012
- Over pressure relief system for fluid ends217US 10,082,137 B2Caterpillar Inc. · 2018
- Infusion pump system with disposable cartridge having pressure venting and pressure feedback204US 8,298,184 B2Tandem Diabetes Care, Inc. · 2012
- Plunger pump fluid end186US 8,784,081 B12014
- Positive displacement type liquid-delivery apparatus128US 6,419,462 B1Ebara Corporation · 2002