F04B 23/14
At least one pump being of the non-positive-displacement type
Official title: at least one pump being of the non-positive-displacement type
F04B23/14 (At least one pump being of the non-positive-displacement type) appears on 73 US grants and 54 published applications in this corpus.
Search patents in F04B- Granted patents
- 73
- Published applications
- 54
- Assignees
- 62
- Inventors
- 156
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 4 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 3 |
| 2014 | 1 | 3 |
| 2015 | 2 | 4 |
| 2016 | 8 | 5 |
| 2017 | 5 | 5 |
| 2018 | 4 | 1 |
| 2019 | 4 | 0 |
| 2020 | 3 | 4 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 3 | 2 |
| 2024 | 3 | 3 |
| 2025 | 4 | 4 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for delivering metered fluid at elevated pressure22 Sep 2026US 12,742,443 B1Prince Sattam Bin Abdulaziz University
- Multi-pressure integrated air pump18 Aug 2026US 12,710,032 B2Intex Marketing Ltd.
- Dual-duct air pump10 Feb 2026US 12,546,335 B1Guangdong Peir Outdoor Products Co., Ltd.
- Multipurpose inflation pump13 Jan 2026US 12,523,208 B2Jingyan Mechanical & Electrical Tools Co., Ltd, Jinhua
- Multi-pressure integrated air pump21 Oct 2025US 12,448,958 B2Intex Marketing Ltd.
- Accumulator for Prevention of Hydraulic Pump Cavitation19 Feb 2026US 2026/0049604 A1The Boeing Company
- Multi-pressure integrated air pump29 Jan 2026US 2026/0028973 A1Intex Marketing Ltd.
- Replaceable Cartridge for Coating System26 Jun 2025US 2025/0205726 A1Transitions Optical, Inc.
- Cementing equipment and control method19 Jun 2025US 2025/0198253 A1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Variable displacement pump (vdp) systems with dry-out centrifugal main pump13 Mar 2025US 2025/0084795 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Modular fuel delivery system87US 5,070,849 AGeneral Motors Corporation · 1991
- Rotary hydrostatic radial piston machines44US 4,686,829 AUnipat AG · 1987
- Pumping and metering system32US 3,946,551 AUnited Technologies Corporation · 1976
- Manure vacuum wagon power assist auger30US 4,661,046 A1987
- Twin pump with a charging pump27US 6,022,198 ABrueninghaus Hydromatik GmbH · 2000