Composition for heat cycle system, and heat cycle system
US-2016369146-A1 · Dec 22, 2016 · US
Lubrication
Lubrication · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F25B31/002 |
| Official title | {Lubrication} |
| Display label | Lubrication |
| Total patents | 624 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 37 |
| 2016 | 49 |
| 2017 | 67 |
| 2018 | 82 |
| 2019 | 69 |
| 2020 | 87 |
| 2021 | 51 |
| 2022 | 53 |
| 2023 | 42 |
| 2024 | 40 |
| 2025 | 42 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Working fluid for heat cycle and heat cycle system
US-2016369147-A1 · Dec 22, 2016 · US
Composition for heat cycle system, and heat cycle system
US-2016355719-A1 · Dec 8, 2016 · US
Composition for heat cycle system, and heat cycle system
US-2016355716-A1 · Dec 8, 2016 · US
Composition for heat cycle system, and heat cycle system
US-2016347981-A1 · Dec 1, 2016 · US
Compressor
US-2016341249-A1 · Nov 24, 2016 · US
Compressor and air conditioning apparatus using the same
US-9499760-B2 · Nov 22, 2016 · US
Compressor Having Oil-Level Sensing System
US-2016319816-A1 · Nov 3, 2016 · US
System for heating a compressor assembly in an HVAC system
US-9482222-B2 · Nov 1, 2016 · US
Steam turbine driven centrifugal heat pump
US-2016265815-A1 · Sep 15, 2016 · US
Heat transfer method
US-2016244652-A1 · Aug 25, 2016 · US
Refrigerator oil composition and refrigerator
US-2016244692-A1 · Aug 25, 2016 · US
Refrigerant compressor
US-9422930-B2 · Aug 23, 2016 · US
Refrigerating machine oil and working fluid composition for refrigerating machine
US-9365760-B2 · Jun 14, 2016 · US
Compressor crankcase heating control systems and methods
US-9353738-B2 · May 31, 2016 · US
Oil separator, and compressor provided with same
US-2016136555-A1 · May 19, 2016 · US
Use of alkyl perfluoroalkene ethers and mixtures thereof in high temperature heat pumps
US-2016137895-A1 · May 19, 2016 · US
Lubricant temperature control with a flow regulating device
US-2016123634-A1 · May 5, 2016 · US
Method for operating a heat pump and heat pump
US-2016123636-A1 · May 5, 2016 · US
Compressor crankcase heating control systems and methods
US-2016061505-A1 · Mar 3, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25B31/002?
- CPC F25B31/002 is the Cooperative Patent Classification code for “Lubrication.”
- How many patents are filed under CPC F25B31/002 (Lubrication)?
- Our database includes 624 publications tagged with this CPC code.
- Is patent activity under CPC F25B31/002 growing?
- Publication counts under this code: 40 in 2024 vs 42 in 2025 (latest complete years).