F04B 51/00
Testing machines, pumps, or pumping installations
F04B51/00 (Testing machines, pumps, or pumping installations) appears on 949 US grants and 1,186 published applications in this corpus.
Search patents in F04B- Granted patents
- 949
- Published applications
- 1,186
- Assignees
- 589
- Inventors
- 2,397
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 4 |
| 2003 | 8 | 10 |
| 2004 | 7 | 25 |
| 2005 | 10 | 13 |
| 2006 | 9 | 11 |
| 2007 | 10 | 26 |
| 2008 | 11 | 22 |
| 2009 | 7 | 20 |
| 2010 | 22 | 38 |
| 2011 | 25 | 18 |
| 2012 | 16 | 19 |
| 2013 | 18 | 49 |
| 2014 | 17 | 33 |
| 2015 | 28 | 46 |
| 2016 | 38 | 80 |
| 2017 | 49 | 106 |
| 2018 | 63 | 92 |
| 2019 | 92 | 81 |
| 2020 | 76 | 69 |
| 2021 | 63 | 75 |
| 2022 | 63 | 66 |
| 2023 | 68 | 76 |
| 2024 | 61 | 91 |
| 2025 | 57 | 69 |
| 2026 | 64 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Devices, systems, and methods for priming a fluid management system29 Sep 2026US 12,746,325 B2Boston Scientific Scimed, Inc.
- Air compressor29 Sep 2026US 12,747,730 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Hydraulic fracturing equipment with non-hydraulic power15 Sep 2026US 12,735,968 B2U.S. Well Services, LLC
- Cylinder block with detected portions and hydraulic device including same15 Sep 2026US 12,736,046 B2Kawasaki Jukogyo Kabushiki Kaisha
- Apparatus and method of pre-preparing a liquid delivery device valve for use8 Sep 2026US 12,729,678 B2Merxin Limited
- Pump health monitoring system8 Oct 2026US 2026/0309146 A1Pentair Water Pool and Spa, Inc.
- Volumetric variable displacement machine8 Oct 2026US 2026/0309147 A1
- Monitoring system and monitoring method8 Oct 2026US 2026/0309148 A1Fuji Corporation
- Systems and method for dynamically calibrating a fluid dispensing system8 Oct 2026US 2026/0310243 A1Zaxis, Inc.
- Systems and Methods for Diagnosing Operational Conditions of a Well Pumping System24 Sep 2026US 2026/0286833 A1
Most cited
By later US patents
- Drug pump systems and methods1,088US 5,935,099 ASIMS Deltec, Inc. · 1999
- Pump simulation apparatus1,024US 5,485,408 ASIMS Deltec, Inc. · 1996
- Systems and methods for communicating with ambulatory medical devices such as drug delivery devices851US 5,338,157 APharmacia Deltec, Inc. · 1994
- Systems and methods for operating ambulatory medical devices such as drug delivery devices737US 5,658,250 ASIMS Deltec, Inc. · 1997
- Drug pump systems and methods658US 6,241,704 B1SIMS Deltec, Inc. · 2001