Compressor
US-10374488-B2 · Aug 6, 2019 · US
wherein the cooling medium circulates freely within the casing
wherein the cooling medium circulates freely within the casing · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K9/12 |
| Official title | wherein the cooling medium circulates freely within the casing |
| Display label | wherein the cooling medium circulates freely within the casing |
| Total patents | 164 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 11 |
| 2017 | 13 |
| 2018 | 17 |
| 2019 | 23 |
| 2020 | 18 |
| 2021 | 15 |
| 2022 | 9 |
| 2023 | 10 |
| 2024 | 15 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Alternator with series fans
US-10361607-B2 · Jul 23, 2019 · US
Electric machine
US-2019123612-A1 · Apr 25, 2019 · US
System, method and apparatus for modular axial field rotary energy device
US-2019074746-A1 · Mar 7, 2019 · US
System and method for reducing power train air resistance
US-10221933-B2 · Mar 5, 2019 · US
System and apparatus for axial field rotary energy device
US-2019068017-A1 · Feb 28, 2019 · US
System, method and apparatus for modular axial field rotary energy device
US-10141804-B2 · Nov 27, 2018 · US
System and apparatus for axial field rotary energy device
US-10141803-B2 · Nov 27, 2018 · US
System and apparatus for modular axial field rotary energy device
US-10135310-B2 · Nov 20, 2018 · US
Electric machine module cooling system and method
US-10069375-B2 · Sep 4, 2018 · US
Cooling apparatus for an electric machine
US-2018241286-A1 · Aug 23, 2018 · US
System and apparatus for modular axial field rotary energy device
US-2018198339-A1 · Jul 12, 2018 · US
System, method and apparatus for modular axial field rotary energy device
US-2018198355-A1 · Jul 12, 2018 · US
System and apparatus for axial field rotary energy device with alternative magnet configuration
US-2018198341-A1 · Jul 12, 2018 · US
System and apparatus for segmented axial field rotary energy device
US-2018198338-A1 · Jul 12, 2018 · US
System and apparatus for axial field rotary energy device
US-2018198327-A1 · Jul 12, 2018 · US
System and apparatus for axial field rotary energy device with alternative circuits
US-2018198340-A1 · Jul 12, 2018 · US
System and apparatus for axial field rotary energy device with alternative coil configuration
US-2018198342-A1 · Jul 12, 2018 · US
Negative pressure motor sealing
US-9929625-B2 · Mar 27, 2018 · US
Heat exchanger for electric machines with double end to center cooling
US-2018062483-A1 · Mar 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K9/12?
- CPC H02K9/12 is the Cooperative Patent Classification code for “wherein the cooling medium circulates freely within the casing.”
- How many patents are filed under CPC H02K9/12 (wherein the cooling medium circulates freely within the casing)?
- Our database includes 164 publications tagged with this CPC code.
- Is patent activity under CPC H02K9/12 growing?
- Publication counts under this code: 15 in 2024 vs 17 in 2025 (latest complete years).