F04C 2210/261
Carbon dioxide
Official title: Carbon dioxide (CO2)
F04C2210/261 (Carbon dioxide) appears on 35 US grants and 50 published applications in this corpus.
Search patents in F04C- Granted patents
- 35
- Published applications
- 50
- Assignees
- 21
- Inventors
- 104
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 2 | 7 |
| 2005 | 2 | 3 |
| 2006 | 1 | 2 |
| 2007 | 3 | 0 |
| 2008 | 2 | 4 |
| 2009 | 0 | 0 |
| 2010 | 3 | 3 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 3 |
| 2020 | 0 | 6 |
| 2021 | 2 | 1 |
| 2022 | 3 | 2 |
| 2023 | 2 | 0 |
| 2024 | 2 | 5 |
| 2025 | 3 | 2 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Compressor module4 Nov 2025US 12,460,637 B2Hanon Systems
- Rotary compressor27 May 2025US 12,313,073 B2LG Electronics Inc.
- Compressor with chromium nitride and titanium nitride layers13 May 2025US 12,297,832 B2Carrier Japan Corporation
- Compressor module1 Oct 2024US 12,104,592 B2Hanon Systems
- Oil control for climate-control system16 Jan 2024US 11,874,031 B2Copeland Corporation
- 2-cylinder rotary compressor15 Jan 2026US 2026/0016010 A1Daikin Industries, Ltd.
- Compressor11 Dec 2025US 2025/0376981 A1Carrier Japan Corporation
- Rotary compressor and refrigeration cycle apparatus10 Jul 2025US 2025/0223966 A1Carrier Japan Corporation
- Compressor module28 Nov 2024US 2024/0392784 A1Hanon Systems
- Rotary compressor7 Nov 2024US 2024/0369059 A1LG Electronics Inc.
Most cited
By later US patents
- Two stage hermetic carbon dioxide compressor44US 6,631,617 B1Tecumseh Products Company · 2003
- Multistage rotary compressor and refrigeration circuit system18US 6,748,754 B2Sanyo Electric Co., Ltd. · 2004
- Components for compressors having electroless coatings on wear surfaces16US 9,885,347 B2Emerson Climate Technologies, Inc. · 2018
- On-vehicle air conditioner14US 6,889,512 B2Sanyo Electric Co., Ltd. · 2005
- Refrigeration system having a rotary compressor13US 7,128,540 B2Sanyo Electric Co., Ltd. · 2006