F04C 2230/85
Methods for improvement by repair or exchange of parts
F04C2230/85 (Methods for improvement by repair or exchange of parts) appears on 25 US grants and 39 published applications in this corpus.
Search patents in F04C- Granted patents
- 25
- Published applications
- 39
- Assignees
- 30
- Inventors
- 85
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 5 |
| 2015 | 0 | 1 |
| 2016 | 3 | 3 |
| 2017 | 1 | 3 |
| 2018 | 3 | 4 |
| 2019 | 2 | 5 |
| 2020 | 5 | 2 |
| 2021 | 1 | 2 |
| 2022 | 4 | 3 |
| 2023 | 3 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 3 |
| 2026 | 1 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- In-situ serviceable gear pump11 Aug 2026US 12,704,125 B1Ace Machine Design Inc.
- Pendulum oil pump28 Nov 2023US 11,828,288 B2Mahle International GmbH
- Lubricant receptacle5 Sep 2023US 11,746,786 B2Leybold France S.A.S.
- Rotary piston pump having a filter15 Aug 2023US 11,725,663 B2Gebr. Becker GmbH
- Portable, rotary vane vacuum pump with a quick oil change system22 Nov 2022US 11,506,207 B1
- Maintenance Method for Scroll Fluid Machine, and Scroll Fluid Machine10 Sep 2026US 2026/0266290 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Adjustable pump for pumping a liquid food product19 Mar 2026US 2026/0078755 A1Tetra Laval Holdings & Finance S. A.
- Composite slug-bearing for gear pumps5 Feb 2026US 2026/0036125 A1Roper Pump Company
- Seal assembly for progressive cavity pump4 Dec 2025US 2025/0369442 A1National Oilwell Varco, L. P.
- External gear and rotor hybrid pump18 Sep 2025US 2025/0290509 A1Roper Pump Company
Most cited
By later US patents
- Oil pump and gears7US 6,729,855 B2S & S Cycle, Inc. · 2004
- Scroll vacuum pump and method of maintenance including replacing a tip seal of a scroll vacuum pump5US 9,341,186 B2Agilent Technologies, Inc. · 2016
- Water pump for marine engine having tool for replacing impeller4US 10,641,265 B2Indmar Products Company Inc. · 2020
- Screw spindle pump2US 10,087,928 B2Klaus Union GmbH & Co. KG · 2018
- Method and kit for gerotor repair1US 10,549,391 B22020