F04B 9/123
Having only one pumping chamber
Official title: having only one pumping chamber
F04B9/123 (Having only one pumping chamber) appears on 233 US grants and 162 published applications in this corpus.
Search patents in F04B- Granted patents
- 233
- Published applications
- 162
- Assignees
- 159
- Inventors
- 408
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 3 | 0 |
| 1978 | 10 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 0 |
| 2002 | 5 | 5 |
| 2003 | 5 | 10 |
| 2004 | 8 | 11 |
| 2005 | 4 | 3 |
| 2006 | 2 | 6 |
| 2007 | 2 | 4 |
| 2008 | 5 | 12 |
| 2009 | 1 | 2 |
| 2010 | 3 | 1 |
| 2011 | 4 | 5 |
| 2012 | 2 | 4 |
| 2013 | 2 | 7 |
| 2014 | 7 | 10 |
| 2015 | 2 | 9 |
| 2016 | 9 | 11 |
| 2017 | 8 | 10 |
| 2018 | 5 | 7 |
| 2019 | 9 | 6 |
| 2020 | 12 | 7 |
| 2021 | 5 | 6 |
| 2022 | 6 | 6 |
| 2023 | 6 | 2 |
| 2024 | 4 | 12 |
| 2025 | 2 | 3 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid sample pump system9 Jun 2026US 12,650,118 B2Mustang Sampling, LLC
- Cyclic aspiration system with a non-powered internal structural impediment engaging with a clot assisting in capture26 May 2026US 12,636,421 B2Neuravi Limited
- Equipment for treating substrate including a chemical solution supply apparatus with pump member and extraction nozzle26 May 2026US 12,636,597 B2Semes Co., Ltd.
- Aspiration vacuum source7 Apr 2026US 12,594,371 B2Neuravi Limited
- Cyclic aspiration system producing cyclic aspiration pressure waveform using vacuum pump and positive pressure pulse generator mechanism31 Mar 2026US 12,589,198 B2Neuravi Limited
- Aspiration vacuum source13 Aug 2026US 2026/0232889 A1Neuravi Limited
- Automated volume distribution and dosing system30 Jul 2026US 2026/0218691 A1Fenwal, Inc.
- Piston pump with quick exhaust slide valves2 Apr 2026US 2026/0092600 A1Samoa Industrial S.A.
- Fluid Sample Pump System21 Aug 2025US 2025/0264092 A1Mustang Sampling, LLC
- Fluid Processing System with High Pressure Pneumatic Syringe Pump3 Jul 2025US 2025/0214079 A1Fenwal, Inc.
Most cited
By later US patents
- Bellows-type pump and metering system73US 4,483,665 ATritec Industries, Inc. · 1984
- Apparatus for harnessing and storage of wind energy70US 4,358,250 A1982
- Diaphragm pump67US 5,409,355 A1995
- High pressure liquid pump apparatus and pumping method62US 5,322,418 AThe Toro Company · 1994
- Liquid color injection pressure booster pump and pumping methods61US 7,980,834 B22011