F04C 2280/04
Preventing corrosion
F04C2280/04 (Preventing corrosion) appears on 25 US grants and 34 published applications in this corpus.
Search patents in F04C- Granted patents
- 25
- Published applications
- 34
- Assignees
- 26
- Inventors
- 92
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 3 |
| 2013 | 2 | 1 |
| 2014 | 4 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 5 |
| 2020 | 2 | 3 |
| 2021 | 1 | 3 |
| 2022 | 6 | 0 |
| 2023 | 1 | 3 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
By publication year.
Recent patents
- Filter device for air compressor16 Dec 2025US 12,497,960 B1Dongguan Hesheng Machinery & Electric Co., Ltd.
- Product removal apparatus, treatment system, and product removal method19 Aug 2025US 12,394,609 B2Ebara Corporation
- Apparatus and method for controlling a vehicle air compressor to track water content in compressor oil31 Dec 2024US 12,180,964 B1Bendix Commercial Vehicle Systems LLC
- Multiple stage vacuum pump21 Nov 2023US 11,821,427 B2Edwards Limited
- Compressor assembly, compressor, and method of manufacturing compressor13 Dec 2022US 11,525,445 B2Daikin Industries, Ltd.
- Filter device for air compressor18 Dec 2025US 2025/0382954 A1Dongguan Hesheng Machinery & Electric Co., Ltd.
- Apparatus and method for controlling a vehicle air compressor to track water content in compressor oil2 Oct 2025US 2025/0305500 A1Bendix Commercial Vehicle Systems LLC
- Dry vacuum pump and manufacturing method12 Oct 2023US 2023/0323878 A1Pfeiffer Vacuum GmbH
- Product removal apparatus, treatment system, and product removal method20 Apr 2023US 2023/0119979 A1Ebara Corporation
- Multiple stage vacuum pump9 Mar 2023US 2023/0076739 A1Edwards Limited
Most cited
By later US patents
- Air compressor of water injection type9US 8,616,856 B2Hitachi Industrial Equipment Systems Co., Ltd. · 2013
- Screw compressor5US 8,801,412 B2Hitachi Industrial Equipment Systems Co., Ltd. · 2014
- Pump enveloped with thermally conductive material5US 9,080,571 B2Edwards Limited · 2015
- Scroll expansion machine with air flow passage around outer periphery of sealing surface4US 8,562,317 B2Anest Iwata Corporation · 2013
- Refrigerant compressor with supporting bearing insulation2US 10,584,744 B2Hitachi-Johnson Controls Air Conditioning, Inc. · 2020