F04B 23/02
Pumping installations or systems: having reservoirs
Official title: having reservoirs
F04B23/02 (Pumping installations or systems: having reservoirs) appears on 963 US grants and 1,162 published applications in this corpus.
Search patents in F04B- Granted patents
- 963
- Published applications
- 1,162
- Assignees
- 692
- Inventors
- 2,136
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 10 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 8 | 4 |
| 2002 | 5 | 3 |
| 2003 | 8 | 12 |
| 2004 | 9 | 16 |
| 2005 | 5 | 16 |
| 2006 | 6 | 10 |
| 2007 | 7 | 12 |
| 2008 | 9 | 9 |
| 2009 | 4 | 18 |
| 2010 | 4 | 13 |
| 2011 | 11 | 17 |
| 2012 | 12 | 31 |
| 2013 | 20 | 38 |
| 2014 | 17 | 43 |
| 2015 | 23 | 45 |
| 2016 | 25 | 62 |
| 2017 | 43 | 87 |
| 2018 | 57 | 101 |
| 2019 | 70 | 107 |
| 2020 | 89 | 79 |
| 2021 | 79 | 88 |
| 2022 | 71 | 92 |
| 2023 | 87 | 97 |
| 2024 | 73 | 73 |
| 2025 | 77 | 54 |
| 2026 | 35 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus for delivering metered fluid at elevated pressure22 Sep 2026US 12,742,443 B1Prince Sattam Bin Abdulaziz University
- Transfer pump assembly8 Sep 2026US 12,729,669 B2Graco Minnesota Inc.
- Systems and methods for simulating water intrusion in a structure and testing sump pump performance25 Aug 2026US 12,716,411 B2State Farm Mutual Automobile Insurance Company
- Mobile abrasive slurry delivery apparatus14 Jul 2026US 12,680,322 B1
- Valve, in particular for a device for administering a liquid medicament, and a corresponding device for administering a liquid medicament30 Jun 2026US 12,667,710 B2
- Sump pump systems, controllers, and methods for operating thereof17 Sep 2026US 2026/0275974 A1
- Hydrogen store having a liquid piston10 Sep 2026US 2026/0266279 A1Maximator GmbH
- Reciprocating compressor3 Sep 2026US 2026/0258798 A1LG Electronics Inc.
- Microfluidic device with positive displacement pump27 Aug 2026US 2026/0249290 A1Quantumdx Group Limited
- Pump and combination pump/mixer device13 Aug 2026US 2026/0235115 A1Alphinity USA, Inc.
Most cited
By later US patents
- Dispensing assembly with interchangeable cartridge pumps167US 5,645,114 ACytoLogix Corporation · 1997
- Dispensing assembly with interchangeable cartridge pumps161US 5,947,167 ACytoLogix Corporation · 1999
- Moving platform slide stainer with heating elements140US 6,180,061 B2CytoLogix Corporation · 2001
- System, device, and method for mixing liquids129US 7,461,968 B2DEKA Products Limited Partnership · 2008
- Pump cassette bank123US 7,632,078 B2DEKA Products Limited Partnership · 2009