F04C 13/00
Adaptations of machines or pumps for special use
Official title: Adaptations of machines or pumps for special use, e.g. for extremely high pressures (of pumps specially adapted for elastic fluids F04C25/00)
F04C13/00 (Adaptations of machines or pumps for special use) appears on 783 US grants and 785 published applications in this corpus.
Search patents in F04C- Granted patents
- 783
- Published applications
- 785
- Assignees
- 489
- Inventors
- 1,528
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 11 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 9 | 0 |
| 2000 | 16 | 0 |
| 2001 | 16 | 4 |
| 2002 | 16 | 16 |
| 2003 | 19 | 17 |
| 2004 | 19 | 22 |
| 2005 | 9 | 25 |
| 2006 | 15 | 21 |
| 2007 | 14 | 21 |
| 2008 | 12 | 19 |
| 2009 | 12 | 28 |
| 2010 | 11 | 35 |
| 2011 | 19 | 31 |
| 2012 | 15 | 35 |
| 2013 | 28 | 27 |
| 2014 | 21 | 35 |
| 2015 | 29 | 72 |
| 2016 | 22 | 48 |
| 2017 | 48 | 36 |
| 2018 | 39 | 64 |
| 2019 | 40 | 49 |
| 2020 | 44 | 41 |
| 2021 | 52 | 36 |
| 2022 | 34 | 28 |
| 2023 | 25 | 22 |
| 2024 | 29 | 20 |
| 2025 | 24 | 16 |
| 2026 | 12 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Progressive cavity pump system having reverse mode8 Sep 2026US 12,729,682 B2Schlumberger Technology Corporation
- Operable implant11 Aug 2026US 12,702,752 B2
- Downhole fluid motor and associated methods11 Aug 2026US 12,704,022 B2Thru Tubing Solutions, Inc.
- In-situ serviceable gear pump11 Aug 2026US 12,704,125 B1Ace Machine Design Inc.
- Pump for additive manufacturing16 Jun 2026US 12,654,396 B2Sciperio, Inc
- Pump device1 Oct 2026US 2026/0298230 A1Mikuni Corporation
- Thermistor flow path13 Aug 2026US 2026/0235120 A1GHSP, Inc.
- 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
- Progressive cavity assembly and associated methods2 Jul 2026US 2026/0185407 A1
Most cited
By later US patents
- Portable medical suction device381US 4,930,997 A1990
- System for actively supporting the flow of body fluids331US 6,508,787 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V. · 2003
- Distributor apparatus with a pair of intermeshing screw rotors255US 9,938,972 B2Fish Engineering Limited · 2018
- Heart assist pump234US 5,112,349 AAmerican BioMed, Inc. · 1992
- Heart assist pump227US 4,964,864 AAmerican BioMed, Inc. · 1990