Battery pack
US-12002981-B2 · Jun 4, 2024 · US
Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M50/691 |
| Official title | Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings |
| Display label | Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings |
| Total patents | 238 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 15 |
| 2019 | 7 |
| 2020 | 10 |
| 2021 | 16 |
| 2022 | 20 |
| 2023 | 39 |
| 2024 | 41 |
| 2025 | 56 |
| 2026 | 18 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Degassing system of pouch for secondary battery
US-2021408635-A1 · Dec 30, 2021 · US
Valve system for an electrochemical power supply source, in particular for an underwater vehicle, and corresponding electrochemical power supply source
US-11211674-B2 · Dec 28, 2021 · US
Air battery and method for using the same
US-2021344065-A1 · Nov 4, 2021 · US
Power storage device
US-11165102-B2 · Nov 2, 2021 · US
Method and System for Extracting Electrolyte in Lithium Secondary Battery
US-2021328282-A1 · Oct 21, 2021 · US
Power storage device
US-11081740-B2 · Aug 3, 2021 · US
Method for recovering positive electrode active material from lithium secondary battery
US-11031632-B2 · Jun 8, 2021 · US
Battery cell having recessed portion formed in connection region between receiving units
US-11024902-B2 · Jun 1, 2021 · US
Battery pack
US-2021066679-A1 · Mar 4, 2021 · US
Electrolyte Removing Device, Apparatus and Method for Manufacturing Secondary Battery Comprising the Same, and Secondary Battery
US-2021036302-A1 · Feb 4, 2021 · US
Battery pack
US-2021005941-A1 · Jan 7, 2021 · US
Waste-gas line for a battery in an aircraft
US-10859193-B2 · Dec 8, 2020 · US
Battery pack having bottom with drainage
US-10790487-B2 · Sep 29, 2020 · US
Valve system for an electrochemical power supply source, in particular for an underwater vehicle, and corresponding electrochemical power supply source
US-2020295343-A1 · Sep 17, 2020 · US
Battery pack water drain system
US-2020152935-A1 · May 14, 2020 · US
Lead-acid battery
US-10608242-B2 · Mar 31, 2020 · US
Battery pack of electric vehicle
US-2020075907-A1 · Mar 5, 2020 · US
Lithium ion battery electrolyte elimination method
US-10581057-B2 · Mar 3, 2020 · US
Battery pack having function of preventing inflow of leaking coolant
US-2020036066-A1 · Jan 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M50/691?
- CPC H01M50/691 is the Cooperative Patent Classification code for “Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings.”
- How many patents are filed under CPC H01M50/691 (Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings)?
- Our database includes 238 publications tagged with this CPC code.
- Is patent activity under CPC H01M50/691 growing?
- Publication counts under this code: 41 in 2024 vs 56 in 2025 (latest complete years).