800V Compact HV Components Patent Snapshot 2026
The 800V compact high-voltage components patent space is nascent, with only 3 patent families in scope and activity concentrated among a small cluster of Chinese academic and infrastructure institutions. Filing only emerged from 2022 onward, marking this as an early-stage field with open competitive space for new entrants.
Guangzhou Metro Design & Research Institute leads a highly concentrated, embryonic field
Guangzhou Metro Design & Research Institute Co. Ltd. and Qingdao University each hold 2 patent records, placing them jointly at the top of the ranking, followed by Shanghai Tech University with 1 patent record.
The top five filers account for 100% of the combined total among the ranked applicants visible in this query, indicating extreme concentration — the entire known corpus is held by three organizations. This is characteristic of a field that has not yet attracted broad industrial participation.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | GUANGZHOU METRO DESIGN & RES INST CO LTD | 2 | |
| 2 | Qingdao University | 2 | |
| 3 | ShanghaiTech University | 1 |
The leaders’ positions, built as new entrants from 2022 onward, represent first-mover stances rather than entrenched moats; no applicant has yet established a portfolio large enough to constitute a defensive barrier.
Activity from 2024 onward reflects publication lag and should not be read as a decline in interest; the effective evidence window closes around 2023. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing emerged in 2022–2023; power conversion and grid supply dominate the technology mix
Two charts capture the temporal and technical shape of the field: annual filing activity from 2017 to 2026, and the IPC branch breakdown that reveals where technical effort is focused.
Annual filing trend
Zero activity was recorded from 2017 through 2021. A single filing appeared in 2022, followed by two in 2023. Entries for 2024–2026 show zero, which reflects publication lag rather than a halt; the field effectively began in 2022 and the pipeline beyond 2023 remains unresolved.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Three IPC branches each account for a meaningful share of the small corpus: H02J (Power supply and grid systems) and H02M (Power conversion — AC/DC and related) each appear across all 3 patent records, while H02B (Power switchboards and substations) appears in 2. This overlap suggests that 800V compact HV work is inherently cross-branch, spanning system-level power supply, conversion topology, and switchgear integration.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Direct current power supply system for urban rail …
The present invention discloses a direct current power supply system for urban rail transit cascaded direct-hanging stations, belonging to the field of power electronic technologies. The power supply system includes a 110 kV high-voltage power grid, a 35 kV medium-voltage power grid, a cascaded H-bridge medium-voltage direct-hanging converter, a 650V-800V… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 下一代800V电池架构车载充电机输入低频纹波转移方法 | 4 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Guangzhou Metro Design & Research Institute
Holds 2 patent records, focused across H02B (switchboards and substations), H02J (power supply and grid systems), and H02M (power conversion), indicating a system-level approach to 800V HV integration in transit infrastructure. Entered as a new entrant and co-files with Qingdao University, reflecting an applied-research model rather than a standalone industrial IP strategy.
patent records: 2Qingdao University
Also holds 2 patent records with an identical IPC focus profile — H02B, H02J, and H02M — and entered as a new entrant alongside the leader. The shared technology emphasis and co-filing relationship mean Qingdao University’s position is best read as a collaborative academic contributor rather than an independent challenger building a separate portfolio.
patent records: 2Frequently asked questions
The current evidence scope contains 3 patent families. This is a nascent corpus; the field only produced its first recorded filing in 2022.
Guangzhou Metro Design & Research Institute Co. Ltd. and Qingdao University each hold 2 patent records, making them joint leaders. Shanghai Tech University holds 1 patent record. All three entered as new entrants from 2022 onward.
The United States leads with 2 patent records, followed by China with 1. No European, Japanese, or Korean filings are present in the evidence, leaving those jurisdictions unclaimed.
H02J (Power supply and grid systems) and H02M (Power conversion — AC/DC and related) each appear across all 3 patent records. H02B (Power switchboards and substations) appears in 2 records. The overlap indicates that 800V compact HV work cuts across system-level supply, conversion topology, and switchgear integration simultaneously.
Yes. Qingdao University and Guangzhou Metro Design & Research Institute are recorded as a co-filing pair, jointly contributing 2 patent records. This is the only collaboration pair visible in the evidence, and it represents an academia-infrastructure model of early-stage development.
Two adjacent IPC branches are absent from the current corpus despite technical adjacency: H01M (electrochemical energy storage, relevant to 800V battery pack integration) and H01F (inductors and transformers, which underpin the H02M power conversion work already present). These are observations of relative sparsity, not validated opportunities, and any entry decision would require further technical and freedom-to-operate assessment.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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