Electric Boosting & Hybrid Glass Furnace Patents: Who Leads 2026
- Two assignees cover the entire ranked field. the top 2 combined account for 12 of 12 records in scope — a fully concentrated filing base with no long tail yet.
- Filing activity peaked in 2023 at 8 records before tapering, though the most recent year is understated by publication lag of roughly 18 months.
- C03B glass manufacture and shaping appears in every record while C03C glass and enamel compositions appears in 11 of 12 — almost every filing spans both classes.
What this landscape covers
Electric boosting and hybrid glass melting furnaces combine combustion heating with supplementary or primary electrical heating to cut fuel use and emissions during glass production. The patent record in scope spans 2015 to 2026 and captures filings addressing electrode placement, melt convection behaviour, electricity share control, glass quality outcomes, electrode erosion, and decarbonization pathways for furnace design.
The dataset is small and concentrated: 12 published records with an assignee ranking that returns only two companies, both fully accounting for the field. That makes this less a landscape of many competitors and more a record of how a small number of filers have staked out furnace architecture claims.
Filing trend and technology composition
Two views of the same 12-record set: how filing activity has moved year to year, and which IPC subclasses the records fall under.
Filing trend
Filings were absent in 2017, built toward a peak of 8 records in 2023, and have since declined toward 2026 — though the final year or two is always undercounted because publication typically lags filing by around 18 months. With growth not computable across too few complete years, treat the 2023 peak as the clearest signal of when the current architecture claims were staked out rather than evidence of a continuing trend.
IPC composition
C03B (glass manufacture and shaping) appears in all 12 records in scope, and C03C (glass and enamel compositions) appears in 11 of 12 — 91.7% of records. Because a single record can carry both classes, these figures sum to more than 100% of the record total; the near-universal overlap shows that furnace architecture and glass composition claims are being filed together rather than separately.
Shares are the percentage of the 12 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electric Boosting and Hybrid Glass Furnaces with Eureka
This page is one run against one query. Ask Eureka your own question about electric boosting and hybrid glass furnaces and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing
Energy efficient and durable hybrid glass melting furnace
The furnace design splits the melting tank into an upstream zone with electrical heating under one crown and a downstream zone with combustion heating under a second crown, joined by a transition zone, followed by a separate fining tank and outlet. A defined height ratio between the first and second crowns, together with a dedicated flue-gas extraction point in the electrically heated zone, structures how heat and combustion gases are separated across the furnace.Filed by AGC Glass Europe; published 2025-11-06.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2024008419A1 | Energy efficient and durable hybrid glass melting furnace | 1 |
Citation counts inside this corpus favour older records and should be read as a signal of influence, not of current commercial importance.
Publication numbers are shown where the record carries one (1 of 1 rows); clicking a row searches Eureka by that number.
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Three findings that shape where a new filing would sit relative to the existing record.
No long tail to route around
The ranked assignee list returns only two companies, and together they account for every record in scope. There is no fragmented field of small filers to design between — any new entrant is filing directly alongside the two incumbents that already hold the space.
Activity has already crested
Filing volume rose to a peak of 8 records in 2023 and has since tapered toward 2026. Because publication lags filing by roughly 18 months, the most recent years understate true activity, but the pattern still points to a filing wave that has largely already happened rather than one still building.
Architecture and composition claims travel together
Nearly every record combines a glass manufacturing/shaping classification with a glass or enamel composition classification. A filing that addresses furnace architecture alone, without touching composition claims, would be the exception rather than the norm in this dataset.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electric boosting and hybrid glass furnaces, with the prior art for and against each one.
Who holds the field
The assignee ranking for this topic returns exactly two companies, both associated with AGC Glass Europe filings, and together they cover the whole 12-record set. Recent-year momentum for both sits at zero for the latest year, consistent with the broader taper seen in the filing trend.
A single filer dominates the ranked field
One assignee accounts for 11 of the 12 records in scope, making it the reference point for any freedom-to-operate review in this space. Its filings anchor the furnace-zone and electrode-placement claims that recur across the dataset.
Filing pace has stalled at the top
Both ranked assignees show zero filings in the latest year, with the leader down -100% year-on-year. Combined with the 2023 peak, this suggests the core architecture claims from this wave have already been filed rather than still being contested.
No emerging third filer yet
With the top 2 combined covering all 12 records, there is currently no visible third entrant building a competing position. A new filer would be establishing a position from zero rather than joining an existing mid-tier.
| Assignee | Recent year | YoY |
|---|---|---|
| AGC Glass Europe | 0 | -100% |
| AGC GLASS EUROPE (100 00) | 0 | — |
Where to take this
The dataset points to a narrow, concentrated field with a filing wave that has already crested. These next steps help translate that into a filing or freedom-to-operate decision.
Map the leader's claim boundaries
With one assignee holding 11 of 12 records, a clause-by-clause review of its furnace-zone and crown-height claims is the fastest way to see what is actually blocked versus merely occupied.
Explore assignee claims in EurekaTest under-claimed branches
Electrode erosion monitoring and low-electricity-share convection control show thin density in this dataset. A quick prior-art pull against these specific phrases will confirm whether they are genuinely open.
Run a white space search in EurekaCommon questions
The assignee ranking for this dataset returns exactly two companies, and together they account for all 12 records in scope. This is not a filtered top-100 or top-50 list — it is the whole ranked field the data returns for this search. That level of concentration means a new entrant is filing directly against two incumbents rather than navigating a crowded, fragmented space.
Filing volume peaked at 8 records in 2023, based on the trend data from 2017 through 2026. Activity has tapered since, though the most recent one to two years are understated because publication typically lags actual filing by around 18 months. Treat the 2023 peak as the clearest marker of when core furnace-architecture claims were staked out, not as proof that interest has permanently declined.
Every record in scope carries the C03B classification for glass manufacture and shaping, and 91.7% also carry C03C for glass and enamel compositions. Because a single patent can be classified under multiple IPC subclasses, these figures add up to more than 100% of the 12-record total. The near-universal overlap indicates that furnace design claims and glass composition claims are typically bundled into the same filings rather than pursued separately.
This filing, assigned to AGC Glass Europe and published 2025-11-06, describes a furnace with a melting tank split into an electrically heated upstream zone and a combustion-heated downstream zone, joined by a transition zone, followed by a separate fining tank. A defined ratio between the crown heights of the two zones, together with a dedicated flue-gas extraction point in the electric zone, is central to the design. Anyone building a hybrid furnace with a similarly split melting tank and comparable crown-height relationship should review this filing's claim language closely.
Given that only two assignees account for all 12 records, several adjacent areas look thin on direct evidence, including electrode erosion monitoring, melt convection control at low electricity share, and flue-gas extraction zone design. These are inferred from the narrow scope of the dataset rather than confirmed as empty, so a targeted prior-art search on the specific phrasing is the right next step before committing to a filing strategy there.
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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.