SiC 200mm Wafer Scale-Up Patent Landscape 2026
The SiC 200mm wafer scale-up space is dominated by Japanese industrial players, with Sharp leading by a wide margin and the field operating at a mature, plateaued activity level. Crystal-growth and semiconductor-device processing routes account for the bulk of filings, while coating, photolithography, and ceramics branches remain comparatively sparse.
Sharp leads a concentrated, Japan-anchored field
Sharp holds the top position with 59 patent records, more than double the nearest rival Resonac Corp at 29 patent records, establishing a clear tier-one lead in SiC 200mm wafer scale-up intellectual property.
The top five filers — Sharp, Resonac Corp, Sumitomo Electric Industries, Pallidus, and Resonac Holdings — together account for 39% of the combined output of the hundred largest filers, indicating a moderately concentrated field where a small cluster of specialists commands significant coverage.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Sharp Corporation | 59 | |
| 2 | Resonac Corporation | 29 | |
| 3 | Sumitomo Electric Industries Ltd | 24 | |
| 4 | Pallidus Inc | 19 | |
| 5 | Resonac Holdings Corporation | 18 | |
| 6 | Toyota Tsusho Corporation | 17 | |
| 7 | Shin-Etsu Chemical Co Ltd | 16 | |
| 8 | Fuji Electric Co Ltd | 14 | |
| 9 | Kwansei Gakuin Educational Foundation | 10 | |
| 10 | NIPPON STEEL & SUMITOMO METAL CORP | 8 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Toshiba Corporation | 7 | |
| 12 | Tohoku University | 6 | |
| 13 | Proterial Ltd | 6 | |
| 14 | Taisic Materials Co | 6 | |
| 15 | Mitsubishi Electric Corporation | 5 | |
| 16 | Fujitsu Ltd | 5 | |
| 17 | ROHM Co Ltd | 5 | |
| 18 | Taiheiyo Cement Corporation | 5 | |
| 19 | University of Technology Sydney | 4 | |
| 20 | CUSIC Inc | 4 |
The depth of Sharp’s lead, combined with a strong presence from Resonac and Sumitomo Electric, suggests that any entrant seeking freedom to operate in crystal growth and SiC epitaxial processing will need to navigate a well-established Japanese-led patent estate before commercializing at 200mm scale.
Filings from approximately 2024 onward are subject to publication lag and likely under-represent actual activity; the scope covers global jurisdictions with the. United States as the lead office. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity has plateaued while crystal growth and device processing dominate the technology mix
Two complementary views — annual filing volume and IPC class composition — reveal a field that reached its structural peak around 2017 and has since maintained a steady-state rhythm, with technology emphasis split between upstream crystal growth and downstream semiconductor device processing.
Annual filing trend
Filings peaked at 24 records in 2017, eased through 2018–2019, and have oscillated in the 18–24 range through 2023 before dropping in 2024–2025 — a pattern consistent with publication lag rather than a genuine late-period decline. The multi-year window shows only modest net growth of 5%, confirming a mature, plateaued activity level rather than an accelerating frontier.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (semiconductor devices) and C30B (crystal growth) together dominate the IPC mix, reflecting the dual focus on bulk SiC crystal production and device-layer processing. H10P, H10D, C01B, and C23C each contribute meaningful secondary clusters, while ceramics, photolithography, and surface-coating branches are present at lower densities — signaling areas of relative sparsity adjacent to the core.
↗ 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.
Silicon carbide substrate production method and si…
A silicon carbide substrate production method includes: the step of providing covering layers <b>1</b><i>b, </i><b>1</b><i>b, </i>each containing silicon oxide, silicon nitride, silicon carbonitride, or silicide, respectively on both surfaces of a base material substrate <b>1</b><i>a </i>carbon, silicon or silicon carbide, and turning the surface of each of… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Methods of fabricating gallium nitride microelectr… | 285 |
| 2 | Method for manufacturing silicon carbide single cr… | 108 |
| 3 | Sic epitaxial wafer and method for manufacturing s… | 89 |
| 4 | Semiconductor device | 80 |
| 5 | Semiconductor device and manufacturing method of t… | 78 |
| 6 | Methods of fabricating gallium nitride microelectr… | 72 |
| 7 | Silicon carbide as a stop layer in chemical mechan… | 65 |
| 8 | Vapor deposition apparatus and techniques using hi… | 59 |
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.
What the competitive structure means for R&D investment decisions
Reading concentration, maturity, collaboration, and geography together provides actionable signals for teams deciding where to build, partner, or avoid in the 200mm SiC value chain.
Field is mature with annual volume plateaued near its peak
The lifecycle stage is Maturity: annual filings have plateaued near their 2017 peak, and the five-year net growth rate stands at only 5%. New entrants face a well-staked landscape in the core crystal-growth and semiconductor-device routes, where incremental differentiation rather than greenfield claiming is the more realistic posture. Teams should audit freedom-to-operate early, as blocking positions in C30B and H01L are densely held.
Mature / PlateauedSharp holds a dominant lead; a distinct second tier follows
Sharp’s 59 patent records position it well ahead of the next tier (Resonac Corp at 29, Sumitomo Electric at 24, Pallidus at 19, Resonac Holdings at 18). The gap between first and second place alone is 30 patent records — a structural moat that reflects years of focused investment in SiC crystal growth and epitaxy. Challengers Pallidus and Toyota Tsusho Corp show momentum as new entrants, suggesting the second tier is still forming.
High concentrationKwansei Gakuin–Toyota Tsusho is the most active co-filing axis
The strongest co-applicant pair is Kwansei Gakuin Educational Foundation and Toyota Tsusho Corp, sharing 12 co-filed records — a university-industry channel focused on crystal growth. Sumitomo Electric and Tohoku University follow with 6 co-filings, and Shin-Etsu Chemical and CUSIC account for 4. These alliances indicate that academic-industrial bridges are a primary mechanism for knowledge transfer in the upstream materials segment, and partnering with a Japanese university may accelerate entry.
Academic-industry axisUnited States leads filing destinations; Japan and Europe follow
The United States is the lead jurisdiction with 181 patent records, followed by Japan at 82 and Europe (EPO) at 70. China holds a comparatively modest 16 patent records, suggesting that strategic protection in the world’s largest SiC device market remains under-developed relative to its manufacturing ambitions. Teams building a defensive or licensing portfolio should ensure coverage extends to China, Canada, and the United Kingdom where lower record counts may signal filing gaps.
US-led, China lightGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Kwansei Gakuin Educational Foundation | Toyota Tsusho Corporation | 12 |
| Sumitomo Electric Industries Ltd | Tohoku University | 6 |
| Shin-Etsu Chemical Co Ltd | CUSIC Inc | 4 |
| Kwansei Gakuin Educational Foundation | DENSO Corporation | 2 |
| Toyota Tsusho Corporation | DENSO Corporation | 2 |
| Resonac Holdings Corporation | National Institute of Advanced Industrial Science and Technology (AIST) | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Sharp anchors crystal growth; Resonac and Sumitomo Electric focus on device processing
The leader and primary challenger occupy distinct but overlapping technical lanes, with Sharp’s emphasis on crystal growth contrasting with Resonac’s and Sumitomo’s stronger orientation toward semiconductor device processing and epitaxial manufacturing.
Sharp Corporation
Sharp holds 59 patent records — the largest position in this corpus by a wide margin. Its technology focus centers on C30B 29 and C30B 25 (crystal growth) plus H10P 14, reflecting deep investment in bulk SiC crystal production and substrate-level innovation. No recent-window momentum data is listed for Sharp in this dataset, indicating it is an established rather than newly accelerating filer, consistent with its long-standing dominance in this space.
patent records: 59Resonac Corp
Resonac Corp holds 29 patent records and shows a ‘new entrant’ momentum trend in the recent window, with 10 recent records — the highest recent count among tracked entrants. Its focus spans H01L 21 and H01L 29 (semiconductor device processing) and C30B 29 (crystal growth), positioning it as a vertically integrated challenger bridging upstream substrate work and downstream device fabrication. The Resonac Holdings entity (18 patent records) adds further depth to the Resonac group’s overall estate.
patent records: 29| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Kwansei Gakuin Educational Foundation | 5 | ▲ new entrant |
| Shin-Etsu Chemical Co Ltd | 4 | ▲ new entrant |
| Toyota Tsusho Corporation | 5 | ▲ new entrant |
| Resonac Corporation | 10 | ▲ new entrant |
| Pallidus Inc | 4 | ▲ new entrant |
Under-served branches adjacent to the dominant SiC core
Several IPC classes appear in the corpus at meaningfully lower density than the dominant crystal-growth and semiconductor-device clusters. These represent under-served adjacent branches where the patent estate is thinner; whether they represent genuine R&D opportunities depends on technical relevance and entry feasibility for a given organization.
G03F · Photolithography & photomechanics
G03F accounts for only 15 patent records and a 2% share among the branches tracked here — sparse given that 200mm scale-up imposes new lithography challenges including mask alignment, photoresist compatibility, and step coverage on larger-diameter substrates. Teams with existing photolithography capability in silicon or GaN processes may find this branch technically adjacent and relatively uncrowded, though any entry should be preceded by a focused freedom-to-operate review given the broader photolithography patent estate outside this corpus.
Search this in Eureka →C23C · Coating & surface deposition
C23C (coating and surface deposition) holds 52 patent records at a 6% share — lower than its technical centrality to epitaxial growth, CVD chamber engineering, and surface passivation at 200mm scale would suggest. The relative sparsity may reflect that coating innovations are being claimed under C30B or H01L rather than C23C directly, but it could also signal genuine coverage gaps in CVD precursor chemistry and surface conditioning steps adapted for larger wafer formats. Organizations specializing in deposition equipment or precursor materials are best placed to assess this branch.
Search this in Eureka →Frequently asked questions
The corpus contains 159 patent families in scope. Filing activity has plateaued near its 2017 peak, with annual volumes oscillating between roughly 18 and 24 records through 2023 before publication-lag effects reduce apparent counts in 2024–2025.
Sharp Corporation leads with 59 patent records, followed by Resonac Corp (29), Sumitomo Electric Industries (24), Pallidus Inc (19), and Resonac Holdings Corp (18). These five together represent 39% of the combined output of the hundred largest filers in the corpus.
H01L (semiconductor devices) and C30B (crystal growth) are the two dominant IPC classes, reflecting the dual focus on upstream bulk crystal production and downstream device-layer processing. C23C (coating and surface deposition), H10D, and C01B form a secondary cluster.
The United States is the lead jurisdiction with 181 patent records, followed by Japan (82) and Europe via the EPO (70). China holds 16 patent records — a comparatively low figure relative to its position in the global SiC device market.
The most active co-filing pair is Kwansei Gakuin Educational Foundation and Toyota Tsusho Corp with 12 jointly filed records. Sumitomo Electric Industries and Tohoku University share 6 co-filings, and Shin-Etsu Chemical and CUSIC account for 4. Academic-industrial partnerships are the primary collaboration model in upstream crystal-growth R&D.
Resonac Corp, Kwansei Gakuin Educational Foundation, Toyota Tsusho Corp, Shin-Etsu Chemical, and Pallidus Inc are all flagged as new entrants with recent filing activity in the latest tracked window. Resonac Corp shows the highest recent count among these at 10 patent records in the recent period.
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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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