Ship Propulsion Efficiency Patent Snapshot 2026
The current indexed corpus for ship propulsion efficiency is extremely small, with activity concentrated in a single IPC branch and two applicants holding equal footing. Filing activity is nascent, with meaningful conclusions about concentration, pace, or leadership requiring a broader data pull.
Two applicants share the indexed corpus equally — concentration is absolute at this scope
Jiangsu University of Science and Technology and Samsung Heavy Industries each hold one patent record in the current indexed corpus, together accounting for the entirety of the top-ranked filers. No single applicant has yet established a visible position by volume.
With the top five filers collectively representing the full share of the ranked applicants visible in this query, there is no meaningful tier gap to describe — the corpus is simply too small to reveal competitive stratification.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | JIANGSU UNIV OF SCI & TECH | 1 | |
| 2 | Samsung Heavy Industries Co., Ltd. | 1 |
The equal standing of an academic institution and a major shipbuilding conglomerate suggests that both applied-research and industrial-development pathways are active, even if the evidence base is too thin to draw directional conclusions.
The most recent filing periods are subject to standard publication lag and should not be read as indicative of actual activity levels; the corpus total reflects current indexing and will grow as records publish. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A single recorded filing in 2023 defines the trend; technology mix is entirely within marine propulsion
The annual filing chart and the technology-composition chart both reflect a corpus at the earliest observable stage. All indexed activity falls within one IPC branch, and the timeline shows a single data point.
Annual filing trend
One patent record was filed in 2023; all other years in the ten-year window show zero activity in the indexed corpus. The 2024–2026 periods are subject to publication lag and do not represent the true level of recent activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All records are classified under B63H (Marine propulsion and steering), confirming that indexed activity is concentrated entirely within the core propulsion branch with no adjacent IPC classes yet represented.
↗ 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.
一种基于LNG的船用电力推进系统
本发明公开一种基于LNG的船用电力推进系统，属于船舶控制技术领域，系统中的LNG发电模块用于将低压汽化后的LNG反应器反应发电；朗肯循环发电模块中流动的介质依次在工质泵、换热器二、汽轮机和换热器一间循环流动，完成机械功的收集，汽轮机与直流发电机连接进行发电；LNG燃料电池反应器和直流发电机均与电推模块连接以进行电力存储；换热器一与LNG低压汽化器间、LNG燃料电池反应器与换热器二间分别构建一个换热循环通路用以增大朗肯循环模块高低温端的势能差。该系统作为纯电系统充分体现了清洁能源的环保优势，且提出的利用LNG冷能和反应余热来提高朗肯循环效率的思路使得系统的经济性、节能性均得到了综合提升。 (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Combined Gas turbine and steam turbine Electricpro… | 16 |
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.
Jiangsu University of Science and Technology
Holds one patent record focused entirely on B63H 21 (Marine propulsion and steering), filed in China. Applicant momentum is flagged as a new entrant, indicating this is the institution’s first recorded activity in the indexed corpus at this scope. As an applied-research university, its filings may signal foundational or exploratory work ahead of industrial application.
patent records: 1Samsung Heavy Industries
Holds one patent record also classified under B63H 21 (Marine propulsion and steering), filed in South Korea. No momentum trend data was returned for this applicant beyond its current record count. As a major global shipbuilder, its presence — even at a single record in this indexed corpus — signals industrial-scale interest in propulsion efficiency.
patent records: 1Frequently asked questions
The current indexed corpus contains 1 patent family in scope. This is an unusually small corpus and likely reflects the specific search parameters used; a broader query would return a larger and more representative dataset.
Jiangsu University of Science and Technology and Samsung Heavy Industries are co-equal at the top of the applicant ranking, each holding one patent record. Neither has established a volume lead over the other in the current indexed corpus.
The indexed corpus includes one patent record in China and one in South Korea. No filings have been indexed in other jurisdictions such as the United States, European Patent Office, or Japan within this corpus slice.
All indexed records fall under B63H (Marine propulsion and steering), specifically B63H 21. No adjacent IPC classes are represented in the current corpus.
The annual filing chart shows one record in 2023 and zero activity in all other years within the ten-year window. This is insufficient to characterize a meaningful trend; the 2024–2026 period is also subject to publication lag.
No co-applicant or collaborative filing relationships are detected in the current indexed corpus. Both applicants appear to have filed independently. Evidence on broader ecosystem collaboration is pending a fuller corpus pull.
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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.
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.