by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles

by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB60L50/61
Official titleby batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
Display labelby batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
Total patents1,933

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
2015303
2016228
2017184
2018149
2019161
2020173
2021149
2022178
2023149
2024119
2025118
202622

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC B60L50/61?
CPC B60L50/61 is the Cooperative Patent Classification code for “by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles.”
How many patents are filed under CPC B60L50/61 (by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles)?
Our database includes 1,933 publications tagged with this CPC code.
Is patent activity under CPC B60L50/61 growing?
Publication counts under this code: 119 in 2024 vs 118 in 2025 (latest complete years).