Battery separators for e-rickshaw and similar vehicle lead acid batteries
US-2024088455-A1 · Mar 14, 2024 · US
Separators; Membranes; Diaphragms; Spacing elements inside cells
Separators; Membranes; Diaphragms; Spacing elements inside cells · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M50/40 |
| Official title | Separators; Membranes; Diaphragms; Spacing elements inside cells |
| Display label | Separators; Membranes; Diaphragms; Spacing elements inside cells |
| Total patents | 481 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 30 |
| 2016 | 28 |
| 2017 | 25 |
| 2018 | 24 |
| 2019 | 34 |
| 2020 | 33 |
| 2021 | 58 |
| 2022 | 70 |
| 2023 | 48 |
| 2024 | 42 |
| 2025 | 82 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Battery separators for e-rickshaw and similar vehicle lead acid batteries
US-2017200984-A1 · Jul 13, 2017 · US
Energy storage container with vortex separator
US-2016380248-A1 · Dec 29, 2016 · US
Secondary battery module
US-9530999-B2 · Dec 27, 2016 · US
Nickel-hydrogen storage battery
US-9525169-B2 · Dec 20, 2016 · US
Battery cell spacer for establishing dielectric barriers within a battery assembly
US-2016365554-A1 · Dec 15, 2016 · US
Air battery and battery pack using same
US-9502741-B2 · Nov 22, 2016 · US
Nonaqueous electrolyte secondary battery
US-2016276699-A9 · Sep 22, 2016 · US
Energy storage device
US-2016276667-A1 · Sep 22, 2016 · US
Electrode alloy powder, negative electrode for nickel-metal hydride storage batteries using the same, and nickel-metal hydride storage battery
US-2016276661-A1 · Sep 22, 2016 · US
Hybrid-type secondary battery including electrodes having different output and capacity properties
US-2016276703-A1 · Sep 22, 2016 · US
Electrode for electricity-storing device, electricity storing device employing such electrode, and method of manufacturing electrode for electricity-storing device
US-9450236-B2 · Sep 20, 2016 · US
Nonaqueous electrolyte secondary battery
US-9450269-B2 · Sep 20, 2016 · US
Water loss separators used with lead acid batteries, systems for improved water loss performance, and methods of manufacture and use thereof
US-2016254573-A1 · Sep 1, 2016 · US
Stacking apparatus and stacking method
US-9425478-B2 · Aug 23, 2016 · US
Cable-type secondary battery
US-9413030-B2 · Aug 9, 2016 · US
Cable-type secondary battery
US-9406939-B2 · Aug 2, 2016 · US
Power storage device
US-9401526-B2 · Jul 26, 2016 · US
Process for in-situ electrochemical oxidative generation and conversion of organosulfur compounds
US-9394491-B2 · Jul 19, 2016 · US
Cable-type secondary battery
US-9397344-B2 · Jul 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M50/40?
- CPC H01M50/40 is the Cooperative Patent Classification code for “Separators; Membranes; Diaphragms; Spacing elements inside cells.”
- How many patents are filed under CPC H01M50/40 (Separators; Membranes; Diaphragms; Spacing elements inside cells)?
- Our database includes 481 publications tagged with this CPC code.
- Is patent activity under CPC H01M50/40 growing?
- Publication counts under this code: 42 in 2024 vs 82 in 2025 (latest complete years).