Electric Ship Propulsion Modeling Patent Snapshot
The patent corpus for electric ship propulsion modeling is extremely nascent, with a single family on record held by CSSC Marine Power and filed exclusively in China. Activity peaked in 2019 and has not recurred, leaving the field effectively uncontested and largely uncharted.
A single applicant holds all recorded IP in this topic
CSSC Marine Power is the sole ranked applicant, holding the one patent family currently on record for electric ship propulsion modeling — making the top-five filers’ share of the ranked applicants visible in this query a complete 100 percent.
There is no tier gap to speak of: one filer occupies the entire evidence snapshot, with no challengers, followers, or secondary entrants visible in the evidence.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | CSSC Marine Power | 1 |
CSSC Marine Power’s position reflects its role as a major state-affiliated Chinese shipbuilding powertrain group, but the absence of any other assignee signals that this specific modeling intersection has drawn minimal dedicated patenting effort globally.
The corpus covers a narrow query scope; broader adjacent searches may surface additional families. The most recent years also carry publication lag and should not be read as confirmed zero-activity periods. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A single 2019 filing defines both the trend and the technology mix
The annual filing trend and the IPC technology composition both trace back to the same single patent family, limiting what can be inferred about broader momentum or structural shifts.
Annual filing trend
One filing appears in 2019; all other years in the window show zero. The field peaked — and effectively began — in 2019, with no subsequent activity. Years from 2024 onward remain subject to publication lag and cannot be confirmed as true zeros.
↗ Hover for values · click a bar to ask EurekaTechnology composition
The single family spans two IPC branches: B63B (ships and marine vessels) and B63H (marine propulsion and steering), with one record each. This dual classification reflects the hybrid structural-propulsion nature of the underlying invention rather than a diversified research portfolio.
↗ 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.
船用电力推进系统交流回馈加载装置及控制方法
本发明公开了一种船用电力推进系统交流回馈加载装置及控制方法，船用电力推进系统交流回馈加载装置包括推进电机、变频器、变压器、配电柜、陪试发电机、整流器、逆变器、出线柜、负载模拟控制器、联接柜、转速传感器、弹性联轴器、扭矩传感器；本发明通过模拟实际的船速工况和海况条件，能够保证电力推进系统的试验能够实现更加贴近实际运行情况，试验出各种性能参数，并且节省大量的能源消耗，电力推进的功率越大，其效果越明显。本发明可用于各种型式的电力推进系统的负载试验。 (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 船用电力推进系统交流回馈加载装置及控制方法 | 9 |
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.
CSSC Marine Power
CSSC Marine Power holds the one patent family on record, classified under both B63B (ships and marine vessels) and B63H (marine propulsion and steering). No momentum data is available given the absence of prior-period filings to compare against. The company is the marine power subsidiary of China State Shipbuilding Corporation, focusing on diesel and hybrid propulsion systems for commercial and naval vessels.
families: 1No challenger identified
No second-ranked applicant appears in the evidence. The corpus contains a single patent family from a single assignee, leaving the challenger position vacant. Any organization active in electric ship propulsion simulation, power system modeling, or vessel energy management that has not filed under this specific framing could position itself as the de facto second mover.
families: 0Frequently asked questions
The current search scope returns one patent family on record, filed in 2019 by CSSC Marine Power in China. This is a very narrow corpus and likely reflects a tightly framed query; broader searches across adjacent propulsion and vessel-systems classes would be expected to surface additional families.
CSSC Marine Power is the sole ranked applicant, holding the single patent family on record. The company is the marine power subsidiary of China State Shipbuilding Corporation and focuses on propulsion systems for commercial and naval vessels.
All recorded filings are in China only. No counterpart applications in PCT, EPO, USPTO, or other national offices appear in the evidence, meaning the technology is not formally protected outside China under this specific query scope.
The field is assessed as being in a Decline stage, with annual filings having eased back from the single peak event in 2019 and no subsequent activity recorded. However, a corpus of one family provides very limited signal, and the broader technology domain of electric ship propulsion is commercially active in ways that may not be captured by this narrow query.
The single patent family spans two IPC branches: B63B (ships and marine vessels) and B63H (marine propulsion and steering), with one patent record under each. No other branches appear in the current corpus.
The top-cited work identified in the evidence is a Chinese-language document describing an AC feedback loading device and control method for a marine electric propulsion system, with nine citations recorded. Patent number CN110683017A is the representative patent associated with this corpus.
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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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