Automotive & HV DC Relay Patents: Who Leads, Where Gaps Are 2026
Automotive and High Voltage DC Relay Patents: Who Is Filing and Where the Gaps Sit
Concentrated core, thin field. Eight ranked assignees cover the 21 records in scope, with the leader holding 8 and fifth place already down to 4 — a narrow group is doing almost all of the documented filing. Filings sit at zero in 2017 and again in 2026 (the latter a partial year), with the peak so far at 5 filings in 2022. With fewer than four complete post-lag years to compare, no growth rate can be stated from this evidence.
- 1西安交通大学8
- 2华为技术有限公司8
- 3FMC公司(美国)5
- 4泰科电子机电元件有限公司4
- 5泰科电子奥地利有限责任公司4
See the full automotive and high voltage dc relays 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 on this landscape
Who are the leading patent filers in automotive and high voltage DC relays?
Within this 21-record dataset, the ranking covers 8 companies, with the top-ranked assignee holding 8 records and fifth place already down to 4. The field includes both a university-industry pairing and established relay-component manufacturers, so leadership here reflects a mix of academic research collaboration and specialist component makers rather than a single dominant corporate filer. Anyone assessing freedom to operate should treat this as a narrow leading group, not a single gatekeeper.
What share of these patents cover core relay switching technology versus adjacent areas?
H01H, the switches-and-relays IPC subclass, covers 76.2% of the 21 records in scope, confirming that most filings target core contact and electromagnet mechanisms. B65G, covering conveying and material handling, appears in 23.8% of records, reflecting overlap with mechanical handling equipment rather than a separate relay technology. Because records can carry multiple IPC classes, these percentages add to more than 100% and should not be read as mutually exclusive categories.
Has patent filing in this space been growing or slowing down?
The filing trend across this dataset runs from zero filings in 2017 to a peak of 5 in 2022, with 2026 showing zero filings so far as a partial year. There are fewer than four complete years of data once the roughly 18-month publication lag is accounted for, so no reliable growth rate can be stated from this evidence. Readers should treat the most recent one to two years as understated rather than as a genuine slowdown.
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 Automotive and High Voltage DC Relays 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.