Electric centrifugal pump with containment shell grooves
US-2017343006-A1 · Nov 30, 2017 · US
using air-gap sleeves or air-gap discs
using air-gap sleeves or air-gap discs · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K5/128 |
| Official title | using air-gap sleeves or air-gap discs |
| Display label | using air-gap sleeves or air-gap discs |
| Total patents | 452 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 28 |
| 2017 | 41 |
| 2018 | 38 |
| 2019 | 61 |
| 2020 | 41 |
| 2021 | 37 |
| 2022 | 47 |
| 2023 | 44 |
| 2024 | 41 |
| 2025 | 35 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Motor modules, multi-axis motor drive assemblies, multi-axis robot apparatus, and electronic device manufacturing systems and methods
US-9742250-B2 · Aug 22, 2017 · US
Canned motor and vacuum pump
US-9614411-B2 · Apr 4, 2017 · US
Electric motor driven liquid pump, in particular for the forced lubrication of a manual transmission for motor vehicles
US-2016377082-A1 · Dec 29, 2016 · US
Electric motor vehicle coolant pump
US-2016365768-A1 · Dec 15, 2016 · US
Secondary encapsulation waterproof structure for hydroelectric power generator
US-2016359387-A1 · Dec 8, 2016 · US
Pump unit
US-9490668-B2 · Nov 8, 2016 · US
Magnet component with a thermal insulation structure, rotor assembly with such a magnet component, electromechanical transducer and wind turbine
US-9490672-B2 · Nov 8, 2016 · US
Transmission of Power Underwater
US-2016318591-A1 · Nov 3, 2016 · US
Electronic pump
US-2016319828-A1 · Nov 3, 2016 · US
Fan device
US-2016301278-A1 · Oct 13, 2016 · US
Electric motor
US-9467019-B2 · Oct 11, 2016 · US
Canned type rotating electrical machine
US-9438081-B2 · Sep 6, 2016 · US
Electronic control apparatus, motor control apparatus and electric fluid pump
US-2016248292-A1 · Aug 25, 2016 · US
Household device having an improved shaft
US-9407119-B2 · Aug 2, 2016 · US
Rotor for electric motor, electric supercharger, and electric-motor assisted supercharger
US-2016190882-A1 · Jun 30, 2016 · US
Electronic pump
US-2016164368-A1 · Jun 9, 2016 · US
Position feedback for sealed environments
US-2016164382-A1 · Jun 9, 2016 · US
Submerged rotor electric water pump with structural wetsleeve
US-9360015-B2 · Jun 7, 2016 · US
Pump unit
US-9362784-B2 · Jun 7, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K5/128?
- CPC H02K5/128 is the Cooperative Patent Classification code for “using air-gap sleeves or air-gap discs.”
- How many patents are filed under CPC H02K5/128 (using air-gap sleeves or air-gap discs)?
- Our database includes 452 publications tagged with this CPC code.
- Is patent activity under CPC H02K5/128 growing?
- Publication counts under this code: 41 in 2024 vs 35 in 2025 (latest complete years).