F04B 35/00
Piston pumps specially adapted for elastic fluids and characterised by the driving
Official title: Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
F04B35/00 (Piston pumps specially adapted for elastic fluids and characterised by the driving) appears on 2,714 US grants and 3,321 published applications in this corpus.
Search patents in F04B- Granted patents
- 2,714
- Published applications
- 3,321
- Assignees
- 1,063
- Inventors
- 5,116
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 6 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 9 | 0 |
| 1985 | 16 | 0 |
| 1986 | 8 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 17 | 0 |
| 1990 | 5 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 11 | 0 |
| 1994 | 13 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 13 | 0 |
| 1998 | 15 | 0 |
| 1999 | 25 | 0 |
| 2000 | 33 | 0 |
| 2001 | 41 | 18 |
| 2002 | 40 | 59 |
| 2003 | 82 | 95 |
| 2004 | 65 | 107 |
| 2005 | 50 | 111 |
| 2006 | 57 | 145 |
| 2007 | 45 | 75 |
| 2008 | 48 | 93 |
| 2009 | 48 | 99 |
| 2010 | 41 | 108 |
| 2011 | 64 | 96 |
| 2012 | 65 | 88 |
| 2013 | 66 | 118 |
| 2014 | 90 | 140 |
| 2015 | 78 | 186 |
| 2016 | 87 | 173 |
| 2017 | 127 | 190 |
| 2018 | 152 | 200 |
| 2019 | 175 | 193 |
| 2020 | 178 | 174 |
| 2021 | 156 | 197 |
| 2022 | 162 | 152 |
| 2023 | 128 | 154 |
| 2024 | 157 | 119 |
| 2025 | 145 | 132 |
| 2026 | 74 | 99 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compressor6 Oct 2026US 12,753,751 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Single-phase field-oriented control for a linear compressor6 Oct 2026US 12,753,752 B1Haier US Appliance Solutions, Inc.
- Pump device29 Sep 2026US 12,747,725 B2Iwaki Co., Ltd.
- Solenoid concept for pump control of a variable displacement piston pump29 Sep 2026US 12,747,727 B2Hamilton Sundstrand Corporation
- Pressure relief system for a portable air pump and inflator system22 Sep 2026US 12,742,444 B2The Noco Company
- Systems and methods for mobile compression8 Oct 2026US 2026/0309154 A1Artemis Production Solutions, Inc.
- Reciprocating mechanical devices and methods of operation1 Oct 2026US 2026/0298321 A1
- Vacuum pump1 Oct 2026US 2026/0299394 A1Pfeiffer Vacuum GmbH
- Portable Air Pump and Inflator System with a Vibration Damping Base24 Sep 2026US 2026/0286946 A1The Noco Company
- Piston pump with pistons, crank rods, and ball joints17 Sep 2026US 2026/0275975 A1Lear Corporation
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Electroactive polymer electrodes1,515US 6,583,533 B2SRI International · 2003
- Portable, battery-powered air compressor for a pneumatic tool system1,047US 7,225,959 B2Black & Decker Inc. · 2007
- Apparatus for controlling driving of reciprocating compressor and method thereof1,026US 7,408,310 B2LG Electronics Inc. · 2008
- Coil winding number variable type motor and coil winding number varying method for varying cooling and heating capacity of reciprocating compressor1,021US 6,841,967 B2LG Electronics Inc. · 2005