F04C 2/1075
Construction of the stationary member
Official title: {Construction of the stationary member}
F04C2/1075 (Construction of the stationary member) appears on 223 US grants and 256 published applications in this corpus.
Search patents in F04C- Granted patents
- 223
- Published applications
- 256
- Assignees
- 90
- Inventors
- 368
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 2 |
| 2003 | 6 | 7 |
| 2004 | 1 | 3 |
| 2005 | 6 | 12 |
| 2006 | 4 | 8 |
| 2007 | 2 | 6 |
| 2008 | 8 | 6 |
| 2009 | 3 | 7 |
| 2010 | 2 | 8 |
| 2011 | 6 | 16 |
| 2012 | 8 | 10 |
| 2013 | 6 | 11 |
| 2014 | 8 | 10 |
| 2015 | 12 | 18 |
| 2016 | 10 | 18 |
| 2017 | 11 | 12 |
| 2018 | 10 | 21 |
| 2019 | 18 | 8 |
| 2020 | 17 | 10 |
| 2021 | 13 | 12 |
| 2022 | 11 | 5 |
| 2023 | 10 | 9 |
| 2024 | 7 | 9 |
| 2025 | 12 | 12 |
| 2026 | 3 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole fluid motor and associated methods11 Aug 2026US 12,704,022 B2Thru Tubing Solutions, Inc.
- Rubber compound reinforced with alternative fibers23 Jun 2026US 12,661,856 B2Abaco Drilling Technologies LLC
- Pump having hollow rotor disposed in stator24 Feb 2026US 12,560,061 B2Schlumberger Technology Corporation
- Rotor tilt compensation in PDM stators2 Dec 2025US 12,486,771 B2Abaco Drilling Technologies LLC
- Uniaxial eccentric screw pump9 Sep 2025US 12,410,792 B2HEISHIN Ltd.
- Metal felt and brush structures as sealing elements in metal-metal mud motors10 Sep 2026US 2026/0266284 A1Baker Hughes Oilfield Operations LLC
- Pump stator tie-layer with surface roughness20 Aug 2026US 2026/0243253 A1Schlumberger Technology Corporation
- Stator with non-uniform thickness for one-to-two lobe ratio pumps6 Aug 2026US 2026/0226894 A1Schlumberger Technology Corporation
- Anisotropic stator reinforcement lining30 Jul 2026US 2026/0218572 A1Schlumberger Technology Corporation
- Method for controlling an eccentric screw pump23 Jul 2026US 2026/0210354 A1Seepex GmbH
Most cited
By later US patents
- Composite stator construction for downhole drilling motors85US 5,171,138 ADrilex Systems, Inc. · 1992
- Internally profiled stator tube64US 6,309,195 B1Halliburton Energy Services.Inc. · 2001
- Stator especially adapted for use in a helicoidal pump/motor50US 6,102,681 AAPS Technology, Inc. · 2000
- Methods of making mud motors49US 6,543,132 B1Baker Hughes Incorporated · 2003
- Optimized fiber reinforced liner material for positive displacement drilling motors42US 6,604,922 B1Schlumberger Technology Corporation · 2003