Bidirectional Converter Patents: Top Companies & Filing Trends 2026
Bidirectional Converter Patents for Storage and Vehicle Applications
59 filings from the leading assignee, yet the top 5 assignees combined hold only 11.6% of all 1,708 records in scope — a genuinely fragmented field, not a two-player race. Filings rose from 56 in 2017 to a peak of 257 in 2024, including a 59% jump between 2021 (162) and 2024 (257). Readings for 2025 and 2026 are still incomplete because of publication lag and should not be read as a decline.
- 1SPAN IO INC3.5%
- 2INFINEON TECH AUSTRIA AG2.5%
- 3BORGWARNER US TECHNOLOGIES LLC2.0%
- 4RGT UNIV OF CALIFORNIA2.0%
- 5HUAWEI DIGITAL POWER TECH CO LTD1.6%
See the full bidirectional converters for storage and vehicles analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about this landscape
Who are the leading patent holders in bidirectional converter technology?
The dataset ranks 100 assignees, with the leader holding 59 records out of 1,708 in scope. The field is fragmented rather than dominated: the top 5 assignees combined account for only 11.6% of all records, and the gap between fifth place (28 records) and tenth place (20 records) is gradual rather than sharp. Practically, this means competitive monitoring needs to cover a wide set of mid-tier filers, not just the single largest holder.
Is bidirectional converter and onboard charger patent activity growing or slowing?
Filings grew from 162 in 2021 to a peak of 257 in 2024, a 59% increase over that span, making 2024 the highest filing year recorded in this dataset. Figures for 2025 and 2026 appear lower, but that reflects the roughly 18-month lag between filing and publication rather than a genuine drop in activity. Any read of a slowdown should wait until the most recent one to two years of filings have had time to publish.
What is the difference between H02M and B60L classifications in this space?
H02M covers power conversion circuitry generally — the AC-DC and DC-DC stages that appear in 68.1% of the 1,708 records in scope — while B60L covers electric vehicle propulsion systems specifically, appearing in 27.9% of records. A filing can carry both classes if it claims a converter integrated into a vehicle drivetrain. The gap between the two shares suggests most claims in this field are written at the power-stage level and are not tied to a specific vehicle architecture.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Bidirectional Converters for Storage and Vehicles covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.