High-Speed Rail Safety (CBTC/ETCS) Patent Snapshot
The current evidence corpus for this precise CBTC/ETCS search scope contains only 1 patent family, filed in 2024, with activity split between China and South Korea. Given the extremely small corpus, no structural concentration or pace-of-change conclusions can be drawn; researchers should broaden the query scope before making R&D investment decisions.
A minimal corpus: two applicants, one jurisdiction each
The applicant ranking is tied at the top: Yunnan Tiexun Technology Co., Ltd. and Korea Railroad Corporation each hold 1 patent record, together accounting for 100% of the top hundred filers’ combined total — a figure that itself equals the entire corpus.
With only two ranked applicants and no gap between them, conventional concentration tiers cannot be assessed. The corpus is too small to characterize visible assignee structure in any statistically meaningful way.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Yunnan Tiexun Technology Co., Ltd. | 1 | |
| 2 | Korea Railroad Corporation | 1 |
The positions of both applicants imply early or exploratory filing rather than an established portfolio strategy; neither has yet demonstrated scale or multi-year continuity in this specific search scope.
Results reflect the query scope as run; broadening the search string or extending the time window would be necessary to capture the broader CBTC/ETCS evidence snapshot. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Single filing event in 2024; technology concentrated in railway traffic control
The annual trend chart and technology composition chart both reflect an extremely limited dataset. Both should be interpreted as starting points for a wider search rather than definitive market signals.
Annual filing trend
All recorded activity falls in 2024, with zero filings captured in every other year from 2017 to 2026. The most recent period is subject to normal publication lag, but the sparse earlier years are equally noteworthy and suggest the query scope is narrowly defined.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B61L (Railway traffic control) is visible in with 2 records, followed by B61B (Railway systems and cableways) with 1 record. This is consistent with core CBTC/ETCS subject matter but the sample is too small to draw conclusions about technology emphasis across the field.
↗ 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.
A rapid-transit railway safety switch
The present invention relates to a line closeness detector of a safety switch for a high speed train, which can stop driving of a train by setting a protection section within a railroad of a high speed train and, more specifically, to a safety switch for transmitting a stop signal or a non-stop signal to a high speed train, which includes: a main switch… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | A rapid-transit railway safety switch | 2 |
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.
Yunnan Tiexun Technology Co., Ltd.
Yunnan Tiexun Technology Co., Ltd. holds 1 patent record, classified across B61B 1 (Railway systems and cableways) and B61L 23 (Railway traffic control). Its applicant momentum is flagged as a new entrant, meaning it has no prior-period filing history in this scope. Its position represents an exploratory rather than established portfolio.
patent records: 1Korea Railroad Corporation
Korea Railroad Corporation holds 1 patent record, with technology emphasis on B61L 23 and B61L 3 (both Railway traffic control subclasses). As a state-owned rail operator, its filing reflects applied operational safety research. No momentum trend data beyond the single record is available in this corpus.
patent records: 1Frequently asked questions
The current evidence corpus contains 1 patent family in scope. This is an unusually small result and most likely reflects a narrow query definition rather than the true size of the CBTC/ETCS patent landscape globally.
Yunnan Tiexun Technology Co., Ltd. and Korea Railroad Corporation are tied at the top of the ranking, each holding 1 patent record. Neither has a statistically distinguishable lead over the other within this corpus.
China and South Korea each account for 1 patent record in this corpus. Both are major high-speed rail markets, but no filings from Europe, Japan, or other key rail jurisdictions appear in the current results.
B61L (Railway traffic control) accounts for 2 records and B61B (Railway systems and cableways) accounts for 1 record. These are the core IPC classes for train signaling and control, consistent with CBTC/ETCS subject matter.
The life-cycle stage cannot be determined from the current corpus. The evidence provides only a single filing event in 2024 with no prior-year activity captured, which is insufficient to characterize field maturity. A broader search would be needed.
The current corpus of 1 patent family indicates the search query should be broadened — for example, by adding synonyms, expanding IPC codes to include G08G and H04L, or widening the applicant and jurisdiction filters. Rerunning the search with a wider scope in PatSnap Eureka will yield a more representative dataset.
Built on Patsnap Open Platform
This report’s underlying patent dataset — filings, assignees, technology clusters — is open for developers via MCP and REST API. Free to start, 10,000 credits, no credit card required.
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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.