F04B 53/148
The piston being provided with channels which are coacting with the cylinder
Official title: {the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit}
F04B53/148 (The piston being provided with channels which are coacting with the cylinder) appears on 28 US grants and 34 published applications in this corpus.
Search patents in F04B- Granted patents
- 28
- Published applications
- 34
- Assignees
- 25
- Inventors
- 67
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 5 |
| 2017 | 2 | 4 |
| 2018 | 2 | 1 |
| 2019 | 5 | 3 |
| 2020 | 1 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 2 |
| 2024 | 3 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-mode piston: a chemical engineering building block23 Jun 2026US 12,663,004 B2
- Piston rod rotation features in a spray fluid pump15 Oct 2024US 12,116,997 B2Graco Minnesota Inc.
- Carbon free compressor pump system2 Jul 2024US 12,025,122 B2King Power Company LLC
- Bulk unloader follower seal11 Jun 2024US 12,007,028 B2Nordson Corporation
- Pump device for a brake system of a motor vehicle, brake system15 Nov 2022US 11,498,539 B2Robert Bosch GmbH
- Multi-Mode Piston: A Chemical Engineering Building Block29 Jan 2026US 2026/0028983 A1
- Oscillatory-rotary liquid dispensing device with spring, and associated method9 Mar 2023US 2023/0075848 A1Eveon
- Carbon Free Compressor Pump System2 Feb 2023US 2023/0032921 A1King Power Company LLC
- Piston rod rotation features in a spray fluid pump27 Jan 2022US 2022/0025882 A1Graco Minnesota Inc.
- Piston for compressor15 Jul 2021US 2021/0215153 A1LG Electronics Inc.
Most cited
By later US patents
- Animal dental aid50US 5,857,431 A1999
- Hydraulic drive system for cryogenic pump34US 9,915,250 B2Caterpillar Inc. · 2018
- Piston pump for a vehicle brake system28US 6,471,496 B1Robert Bosch GmbH · 2002
- Piston pump for a hydraulic brake system of a vehicle19US 6,276,909 B1Robert Bosch GmbH · 2001
- Rotating piston for pumps18US 10,337,614 B2Graco Minnesota Inc. · 2019