F04C 15/06
Arrangements for admission or discharge of the working fluid
Official title: Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C15/06 (Arrangements for admission or discharge of the working fluid) appears on 635 US grants and 641 published applications in this corpus.
Search patents in F04C- Granted patents
- 635
- Published applications
- 641
- Assignees
- 359
- Inventors
- 1,293
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 10 | 0 |
| 2001 | 6 | 0 |
| 2002 | 13 | 6 |
| 2003 | 4 | 5 |
| 2004 | 4 | 8 |
| 2005 | 5 | 7 |
| 2006 | 3 | 4 |
| 2007 | 4 | 5 |
| 2008 | 6 | 8 |
| 2009 | 2 | 12 |
| 2010 | 6 | 12 |
| 2011 | 4 | 12 |
| 2012 | 4 | 10 |
| 2013 | 7 | 20 |
| 2014 | 15 | 23 |
| 2015 | 20 | 61 |
| 2016 | 23 | 60 |
| 2017 | 43 | 69 |
| 2018 | 44 | 63 |
| 2019 | 51 | 41 |
| 2020 | 49 | 43 |
| 2021 | 44 | 36 |
| 2022 | 38 | 38 |
| 2023 | 32 | 29 |
| 2024 | 43 | 31 |
| 2025 | 29 | 21 |
| 2026 | 10 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid pump for an aircraft turbomachine, lubrication circuit and aircraft turbomachine6 Oct 2026US 12,753,758 B2Safran Aero Boosters SA
- Dual oil pump with centrifugal shifter6 Oct 2026US 12,753,804 B1Schaeffler Technologies AG & Co. KG
- Automotive electric oil pump21 Jul 2026US 12,687,166 B2Pierburg Pump Technology GmbH
- Pump and method for adjusting the delivery rate of a pump14 Jul 2026US 12,680,543 B2ITT Bornemann GmbH
- Rotor pump with dual-sided inlets30 Jun 2026US 12,669,121 B2Joby Aero, Inc.
- Screw spindle pump8 Oct 2026US 2026/0309150 A1Leistritz Pumpen GmbH
- Rotor pump with dual-sided inlets1 Oct 2026US 2026/0298228 A1Joby Aero, Inc.
- Vane pump10 Sep 2026US 2026/0266287 A1KYB Corporation
- Eccentric Screw Pump Device, Pump System, Discharge System and Use13 Aug 2026US 2026/0235121 A1Putzmeister Engineering GmbH
- Scroll pump6 Aug 2026US 2026/0226895 A1Edwards Limited
Most cited
By later US patents
- Distributor apparatus with a pair of intermeshing screw rotors255US 9,938,972 B2Fish Engineering Limited · 2018
- Vehicle drivetrain hydraulic coupling70US 5,310,388 AASHA Corporation · 1994
- Hydraulic coupling for vehicle drivetrain54US 5,595,214 AASHA Corporation · 1997
- Hydraulic coupling for vehicle drivetrain53US 5,536,215 AASHA Corporation · 1996
- Gerotor pump having an eccentric ring housing with an integral pressure chamber45US 6,648,611 B2Torque-Traction Technologies, Inc. · 2003