F04B 2201/0208
Leakage across the piston
F04B2201/0208 (Leakage across the piston) appears on 35 US grants and 30 published applications in this corpus.
Search patents in F04B- Granted patents
- 35
- Published applications
- 30
- Assignees
- 32
- Inventors
- 71
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 4 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 1 |
| 2019 | 1 | 4 |
| 2020 | 1 | 4 |
| 2021 | 6 | 3 |
| 2022 | 1 | 2 |
| 2023 | 3 | 0 |
| 2024 | 3 | 3 |
| 2025 | 2 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bellows failure detection for a pump1 Sep 2026US 12,723,580 B2Halliburton Energy Services.Inc.
- Liquid delivery pump10 Feb 2026US 12,546,299 B2Hitachi High-Tech Corporation
- Artificial intelligence based hydraulic fracturing system monitoring and control16 Sep 2025US 12,416,228 B2Typhon Technology Solutions (U.S.), LLC
- Dynamic compressor controls26 Aug 2025US 12,398,716 B2Detechtion USA Inc.
- Artificial intelligence based hydraulic fracturing system monitoring and control12 Mar 2024US 11,927,087 B2Typhon Technology Solutions (U.S.), LLC
- Pumping apparatus11 Jun 2026US 2026/0160238 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Artificial intelligence based hydraulic fracturing system monitoring and control18 Dec 2025US 2025/0382863 A1Typhon Technology Solutions (U.S.), LLC
- Leakage monitoring for booster pump18 Sep 2025US 2025/0290503 A1
- Liquid delivery pump30 Jan 2025US 2025/0035096 A1Hitachi High-Tech Corporation
- Bellows failure detection for a pump14 Nov 2024US 2024/0376881 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Active hydraulic ripple cancellation methods and systems96US 10,954,935 B2ClearMotion, Inc. · 2021
- Swivel hooks and method for making the same47US 3,995,822 ACoats & Clarks, Inc. · 1976
- Method and apparatus for real time compensation of fluid compressibility in high pressure reciprocating pumps43US 5,108,264 AHewlett-Packard Company · 1992
- Method and apparatus for analyzing the operating condition of a machine25US 5,112,196 ABeta Machinery Analysis Ltd. · 1992
- Double-acting flexible tube pump20US 4,178,133 ABinks Manufacturing Company · 1979