F04B 2201/1201
Rotational speed of the axis
F04B2201/1201 (Rotational speed of the axis) appears on 137 US grants and 127 published applications in this corpus.
Search patents in F04B- Granted patents
- 137
- Published applications
- 127
- Assignees
- 116
- Inventors
- 340
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 8 |
| 2005 | 1 | 4 |
| 2006 | 3 | 4 |
| 2007 | 2 | 2 |
| 2008 | 0 | 10 |
| 2009 | 3 | 6 |
| 2010 | 8 | 6 |
| 2011 | 3 | 5 |
| 2012 | 4 | 3 |
| 2013 | 2 | 6 |
| 2014 | 3 | 3 |
| 2015 | 8 | 2 |
| 2016 | 1 | 3 |
| 2017 | 3 | 7 |
| 2018 | 3 | 3 |
| 2019 | 6 | 3 |
| 2020 | 4 | 10 |
| 2021 | 6 | 6 |
| 2022 | 8 | 13 |
| 2023 | 13 | 10 |
| 2024 | 6 | 4 |
| 2025 | 9 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Regenerative pumping system and method27 Jan 2026US 12,535,087 B2Artificial Lift Production International Corp.
- Method for operating a pump6 Jan 2026US 12,516,664 B2Robert Bosch GmbH
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- Electronic pressure compensated hydraulic motor pump with variable output power2 Sep 2025US 12,404,846 B2Eaton Intelligent Power Limited
- Adaptable sucker rod pump controller and system suitable for use with various well topologies17 Sep 2026US 2026/0275981 A1Ravdos Holdings Inc.
- Electric pump system and method with hollow shaft and temperature sensor18 Jun 2026US 2026/0168491 A1Tesla, Inc.
- Fluid machine and method for controlling such a machine14 May 2026US 2026/0132780 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Regenerative Pumping System And Method28 Aug 2025US 2025/0270910 A1Artificial Lift Production International Corp. o/a AL PRO International Corp.
- Control circuitry and calibration system20 Mar 2025US 2025/0092870 A1Kawasaki Jukogyo Kabushiki Kaisha
Most cited
By later US patents
- Variable rate pumping system276US 7,563,076 B2Halliburton Energy Services.Inc. · 2009
- System and method for driving a pump174US 8,801,394 B2Solar Turbines Incorporated · 2014
- 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
- Power transmission80US 5,073,091 AVickers, Incorporated · 1991
- Variable displacement compressor control valve arrangement59US 4,606,705 AGeneral Motors Corporation · 1986