F04B 2201/08
Cylinder or housing parameters
F04B2201/08 (Cylinder or housing parameters) appears on 219 US grants and 261 published applications in this corpus.
Search patents in F04B- Granted patents
- 219
- Published applications
- 261
- Assignees
- 188
- Inventors
- 626
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 8 |
| 2004 | 1 | 3 |
| 2005 | 7 | 5 |
| 2006 | 3 | 2 |
| 2007 | 2 | 8 |
| 2008 | 2 | 7 |
| 2009 | 1 | 3 |
| 2010 | 4 | 13 |
| 2011 | 4 | 9 |
| 2012 | 3 | 7 |
| 2013 | 4 | 5 |
| 2014 | 8 | 10 |
| 2015 | 6 | 7 |
| 2016 | 6 | 7 |
| 2017 | 5 | 10 |
| 2018 | 6 | 19 |
| 2019 | 8 | 18 |
| 2020 | 14 | 14 |
| 2021 | 21 | 30 |
| 2022 | 17 | 18 |
| 2023 | 23 | 18 |
| 2024 | 14 | 19 |
| 2025 | 12 | 9 |
| 2026 | 14 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 2201/0801TemperatureIndexing code80
- F04B 2201/0802VibrationIndexing code58
- F04B 2201/0803LeakageIndexing code29
- F04B 2201/0804NoiseIndexing code15
- F04B 2201/0805Rotational speed of a rotating cylinder blockIndexing code15
- F04B 2201/0807Number of working cylindersIndexing code12
- F04B 2201/0808Size of the dead volumeIndexing code11
- F04B 2201/0806Resonant frequencyIndexing code5
Recent patents
- Hydraulic motor15 Sep 2026US 12,736,038 B2Nachi-Fujikoshi Corp.
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- Cryopump, cryopump system, and cryopump regeneration method28 Jul 2026US 12,692,851 B2Sumitomo Heavy Industries, Ltd.
- Fracturing apparatus and vibration reduction method thereof16 Jun 2026US 12,655,838 B2Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Pump monitoring system and method2 Jun 2026US 12,644,449 B2Viking Pump, Inc.
- Hydrostatic Rotary Machine Having Counting Apertures on a Second Brake Disc24 Sep 2026US 2026/0286951 A1Robert Bosch GmbH
- System for detecting wear in fluid end packing of reciprocating pumps18 Jun 2026US 2026/0168489 A1SPM Oil & Gas Inc.
- Hydraulic motor7 May 2026US 2026/0126032 A1Nachi-Fujikoshi Corp.
- Intuitive Natural Gas Compressor Monitoring System30 Apr 2026US 2026/0117763 A1Inpro/Seal LLC
- Minimizing recycle flow in pump operation9 Apr 2026US 2026/0098611 A1Integrated Cryogenic Solutions, LLC
Most cited
By later US patents
- Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores267US 6,167,965 ABaker Hughes Incorporated · 2001
- Reciprocating pump system and method for operating same135US 5,846,056 A1998
- Enclosure assembly for enhanced cooling of direct drive unit and related methods118US 11,109,508 B1BJ Energy Solutions, LLC · 2021
- Status monitoring and failure diagnosis system for plunger pump100US 11,401,927 B2American Jereh International Corporation · 2022
- Systems to monitor, detect, and/or intervene relative to cavitation and pulsation events during a hydraulic fracturing operation91US 11,149,533 B1BJ Energy Solutions, LLC · 2021