F04C 2240/804
Accumulators for refrigerant circuits
F04C2240/804 (Accumulators for refrigerant circuits) appears on 38 US grants and 49 published applications in this corpus.
Search patents in F04C- Granted patents
- 38
- Published applications
- 49
- Assignees
- 15
- Inventors
- 87
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 3 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 5 |
| 2013 | 1 | 0 |
| 2014 | 4 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 3 |
| 2018 | 0 | 1 |
| 2019 | 3 | 1 |
| 2020 | 4 | 3 |
| 2021 | 2 | 5 |
| 2022 | 3 | 2 |
| 2023 | 0 | 7 |
| 2024 | 8 | 4 |
| 2025 | 3 | 6 |
| 2026 | 2 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Compressor unit and refrigeration apparatus with reduced vibrations3 Mar 2026US 12,565,891 B2Daikin Industries, Ltd.
- Hermetic type compressor3 Mar 2026US 12,565,892 B2Fujitsu General Limited
- Rotor assembly and compressor15 Jul 2025US 12,359,666 B2Guangdong Midea Environmental Technology Co., Ltd.
- Hermetic type compressor20 May 2025US 12,305,647 B2Fujitsu General Limited
- Rotary compressor28 Jan 2025US 12,209,781 B2Fujitsu General Limited
- Accumulator, compressor, and refrigeration cycle apparatus25 Dec 2025US 2025/0389465 A1Carrier Japan Corporation
- Accumulator, compressor, and refrigeration cycle apparatus4 Dec 2025US 2025/0369667 A1Carrier Japan Corporation
- Accumulator fixing mechanism and compressor14 Aug 2025US 2025/0257914 A1Carrier Japan Corporation
- Rotary compressor and refrigeration cycle apparatus10 Jul 2025US 2025/0223966 A1Carrier Japan Corporation
- Compressor and refrigeration apparatus22 May 2025US 2025/0163940 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Rotary compressor assembly with improved vibration suppression35US 6,336,794 B12002
- Rotary hermetic compressor and refrigeration cycle system17US 7,290,994 B2Toshiba Carrier Corporation · 2007
- Two-stage rotary compressor8US 7,641,454 B2Fujitsu General Limited · 2010
- Rotary compressor with increased heating ability and refrigerant circuit for an air conditioner8US 9,664,191 B2Fujitsu General Limited · 2017
- Two-stage rotary compressor7US 7,780,427 B2Fujitsu General Limited · 2010