F25B 2500/16
Lubrication
F25B2500/16 (Lubrication) appears on 221 US grants and 336 published applications in this corpus.
Search patents in F25B- Granted patents
- 221
- Published applications
- 336
- Assignees
- 112
- Inventors
- 676
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 1 | 2 |
| 2004 | 1 | 6 |
| 2005 | 1 | 8 |
| 2006 | 6 | 5 |
| 2007 | 4 | 5 |
| 2008 | 5 | 5 |
| 2009 | 0 | 1 |
| 2010 | 3 | 8 |
| 2011 | 4 | 4 |
| 2012 | 1 | 5 |
| 2013 | 4 | 3 |
| 2014 | 0 | 2 |
| 2015 | 3 | 17 |
| 2016 | 10 | 19 |
| 2017 | 4 | 29 |
| 2018 | 16 | 23 |
| 2019 | 29 | 21 |
| 2020 | 19 | 40 |
| 2021 | 22 | 26 |
| 2022 | 27 | 21 |
| 2023 | 20 | 18 |
| 2024 | 21 | 21 |
| 2025 | 11 | 28 |
| 2026 | 9 | 19 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Refrigerant circulation system29 Sep 2026US 12,747,898 B2Mazda Motor Corporation
- Control method and device suitable for air conditioner in high drop mode15 Sep 2026US 12,736,247 B2Carrier Corporation
- Lubricant management in an HVACR system28 Jul 2026US 12,693,052 B2Trane International Inc.
- Refrigerant system and controlling method thereof for equalizing pressure difference between oil separator and evaporator14 Apr 2026US 12,601,530 B2Fu Sheng Industrial Co., Ltd.
- Compressor oil recovery in hybrid VCC pumped two phase loops17 Mar 2026US 12,578,131 B2Hamilton Sundstrand Corporation
- Oil distribution system for multiple-compressor systems20 Aug 2026US 2026/0243242 A1
- Motor-operated valve and refrigeration cycle device20 Aug 2026US 2026/0243366 A1Fujikoki Corporation
- Fluid supply system for bearings of hvac&r system13 Aug 2026US 2026/0235333 A1Tyco Fire & Security GmbH
- Uninterruptible power supply for hvac&r system13 Aug 2026US 2026/0238036 A1Tyco Fire & Security GmbH
- Bearing system for hvac&r system6 Aug 2026US 2026/0227102 A1Tyco Fire & Security GmbH
Most cited
By later US patents
- Variable speed compressor motor control for low speed operation39US 7,854,137 B2Carrier Corporation · 2010
- Drive unit for compressor and refrigerator24US 7,392,158 B2Daikin Industries, Ltd. · 2008
- Oil separator and air conditioner using the same17US 9,500,396 B2LG Electronics Inc. · 2016
- Pre-start bearing lubrication for refrigeration system compressor15US 6,550,258 B1Carrier Corporation · 2003
- Refrigeration system having a rotary compressor13US 7,128,540 B2Sanyo Electric Co., Ltd. · 2006