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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/graphitization-and-artificial-graphite-production-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Steel & Metallurgical ProcessesGraphitization and Artificial Graphite Production Patents
- Four assignees account for all 28 records in scope, with no long tail of smaller filers behind them.
- Filing peaked in 2024 at 12 records, after climbing from zero in 2017 and sitting flat at the 2022 midpoint.
- Furnace and coke classes dominate the corpus, while battery-grade graphite (H01M) appears in only 7.1% of the 28 records — a narrow bridge to cell manufacturing.
28
Published Records
EP
Leading Jurisdiction
2024
Peak Filing Year
C01B
Lead IPC Subclass
Published byPatsnap Research··6 min readSourced from Patsnap Eureka
Overview
What this patent set covers
This landscape tracks patent families addressing graphitization furnace design, artificial graphite production and process control — including needle coke raw material selection, graphitization temperature and holding time, energy consumption per ton, puffing inhibitors and crystallinity control. The scope is defined by IPC classes covering non-metallic inorganic compounds, ceramics and refractories, and furnaces and kilns, filtered to documents that name these process parameters directly rather than graphite use in general.
Coverage runs from 2015 through the 2026-07-31 data cut-off. Because publication typically lags filing by around 18 months, the most recent filing year in this set is understated and should not be read as a drop in activity.
Filing activity and technology composition, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
The Data
Filing trend and technology composition
Two views of the same 28 records: how filing activity has moved year over year, and how those records distribute across the IPC classes that define graphitization and artificial graphite production.
A late, narrow filing wave
Filing was effectively absent in 2017, rose gradually, sat flat at 2 records by the 2022 midpoint, then climbed to a peak of 12 in 2024. The 2026 figure of 1 is a partial year and should not be read against the full-year peak.
Furnace and coke process classes dominate
All 28 records carry a C01B classification (non-metallic elements and inorganic compounds), and most also carry F27B (furnaces and kilns, 85.7%) or C04B and C10B (ceramics/refractories and coke, each 71.4%). Only 7.1% of the 28 records touch H01M battery classification, meaning most of this corpus addresses the graphite-making process itself rather than its end use in cells.
Shares are the percentage of the 28 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
Go deeper on Graphitization and Artificial Graphite Production with Eureka
This page is one run against one query. Ask Eureka your own question about graphitization and artificial graphite production and every answer comes back with the patent numbers behind it.
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A representative filing
Representative Filing
Graphitization furnace comprising widening cross-section
SGL CARBON SE
The filing describes a graphitization furnace with a channel connecting a raw material inlet and product outlet, split into upstream and downstream sections whose cross-sectional areas change along the flow path. The geometry is claimed as a way to manage the process conditions raw material experiences as it moves through the furnace.Filed by SGL CARBON SE, published 2024-10-31 as WO2024223895A1.
Most-cited records in this set
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20230183073A1 | Method for preparing modified graphite, secondary battery, battery module, battery pack and power consuming d… | 3 |
Citation counts reflect activity inside this searched corpus and skew toward older records; treat them as a signal of influence, not of current importance.
Publication numbers are shown where the record carries one (1 of 1 rows); clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for a filing decision
The dataset is small and concentrated, which changes how it should be read: a handful of filings can shift the picture, and absence of activity in a branch is more informative than usual.
Concentration
100% in 4 assignees
of 28 records
No long tail behind the leaders
The ranked assignees account for all 28 records in scope, with the leader alone holding 24. There is no visible tier of smaller independent filers behind them in this dataset.
Four ranked assignees, 28 records
Momentum
Peak 12 in 2024
vs. 2 at 2022 midpoint
Growth is flat to declining, not accelerating
Filing built from zero in 2017 to a peak of 12 in 2024, but the 2022 midpoint of 2 shows the growth was concentrated late and unevenly rather than compounding steadily across the period.
2017–2026 filing trend
Technology mix
7.1% carry H01M
of 28 records
Battery-grade graphite is a narrow bridge
Almost every record touches core graphitization process classes, but only 2 of 28 records also carry a battery classification. Process innovation here is being claimed largely independent of the battery end-use.
IPC composition, 28 records
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to graphitization and artificial graphite production, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who is filing, and where the field is open
With only four ranked assignees covering the entire dataset, competitive read here is less about market share and more about which specific process claims each has staked out.
Leader
24 records
of 28 in scope
One assignee dominates by volume
The leading assignee holds 24 of the 28 records in this set, giving it the broadest claim coverage across furnace and coke-related process steps.
Recent-year momentum: 0 filings, -100% YoY
Battery integrator
H01M crossover
2 of 28 records
A battery-maker filing on the process side
One assignee tied to battery manufacturing appears in this set, reflecting interest in graphite production process control rather than only cell-level claims.
Recent-year momentum: 0 filings
Emerging filer
1 in latest year
most recent activity
A research-linked filer active most recently
One university-linked assignee recorded the only filing in the most recent year captured, the sole point of new activity against an otherwise flat recent trend.
Recent-year momentum: 1 filing, latest year
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Xinjiang University | 1 | — |
| SGL Carbon SE | 0 | -100% |
| Contemporary Amperex Technology Co., Ltd. (CATL) | 0 | — |
| Suzhou Jinhe New Material Co., Ltd. | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next
Where to take this next
This landscape identifies the concentration and the gaps; the next step is testing a specific claim or process idea against the underlying full-text records.
Check freedom-to-operate on furnace geometry
The featured filing claims a specific cross-sectional channel design; adjacent geometries should be checked against its full claim set before committing engineering resources.
Explore in EurekaMap the puffing-inhibitor and crystallinity gaps
Thin coverage in these sub-areas may reflect either genuine white space or documents outside this search string; verify before assuming an opening.
Explore in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on graphitization patents
In this dataset of 28 records, one assignee holds 24 of them, making it the clear leader by volume. Three other assignees make up the remainder, and together the four ranked assignees account for all 28 records in scope. There is no additional tier of smaller independent filers visible in this dataset, which is unusual and suggests the field is narrowly held rather than fragmented.
Filing rose from zero in 2017 to a peak of 12 records in 2024, but the path was uneven: the 2022 midpoint sat at only 2 records, meaning most of the growth happened late in the period rather than building steadily. The 2026 figure is a partial year and understates true activity, since publication typically lags filing by around 18 months. Overall the trend reads as flat to declining rather than accelerating.
Most of the 28 records classify under core graphitization process categories such as furnaces, kilns, ceramics and coke, not battery classifications. Only 2 of the 28 records, 7.1%, also carry a battery-related IPC class, indicating that process innovation in graphitization is being patented largely independent of its downstream use in battery cells. A filer targeting battery-grade artificial graphite should expect thinner direct coverage here than the overall corpus size suggests.
WO2024223895A1, filed by SGL CARBON SE and published 2024-10-31, describes a graphitization furnace with a channel connecting a raw material inlet and product outlet, where the channel's cross-sectional area changes between an upstream and downstream section. The claim is specific to this changing-geometry channel design rather than graphitization furnaces generally. Anyone designing furnace internals for artificial graphite production should review its full claim scope before adopting a similar tapering or widening channel approach.
Based on IPC coverage across the 28 records, sub-areas such as puffing inhibitor formulations, energy-consumption-per-ton optimisation and needle coke feedstock qualification show thinner direct claim coverage than the dominant furnace and coke process classes. This does not guarantee the space is unclaimed elsewhere, since the search scope is bounded by a specific IPC and keyword combination. It does indicate that a first mover with a well-drafted claim in these narrower branches would face less crowded prior art within this dataset than in furnace geometry itself.
Answers are grounded in the same dataset. Derived from a Patsnap search on Graphitization and Artificial Graphite Production covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Research Graphitization and Artificial Graphite Production in depth with Eureka
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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.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company's registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.