Solar Control Glazing Patents: Top Companies & Filing Trends 2026
Solar Control and Coated Glazing Patents: Who Files, What They Claim
52.0% concentration. The top 5 of 46 ranked assignees account for 106 of 204 records in scope — over half the field sits with a handful of filers. Filings peaked at 21 in 2018, dipped, then rebuilt to 8 by 2024 — a +100% rise from the 2021 low of 4. Treat 2025 and 2026 as undercounted rather than declining, given the typical 18-month publication lag.
- 1AGC GLASS EUROPE SA42
- 23M INNOVATIVE PROPERTIES CO33
- 3CENT GLASS CO LTD11
- 4LIBBEY OWENS FORD CO10
- 5COUNCIL OF SCI & IND RES10
See the full solar control and coated glazing analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about this landscape
Who are the leading patent holders in solar control and coated glazing?
The dataset ranks 46 assignees by record count, with the leader holding 42 of 204 records and the top 5 combined accounting for 52.0% of all records in scope. That is a steep concentration curve rather than an even spread — fifth place holds only 10 records, a large drop from the leader. Recent-year momentum data shows several of these historically dominant assignees at zero filings in the latest tracked year, so leadership by cumulative count does not necessarily mean current activity.
Is patent filing in this field growing or slowing down?
Filings rose from 4 in 2021 to 8 in 2024, a +100% increase, after an earlier peak of 21 filings in 2018. The apparent drop-off in 2025 and 2026 should not be read as a slowdown, because publication typically lags filing by around 18 months and those years are still filling in. The most recent year that can be treated as a complete, comparable data point is 2024.
What technology areas dominate solar control glazing patents?
Two IPC subclasses anchor the field: B32B, covering layered products and laminates, appears in 51.5% of the 204 records, and C03C, covering glass and enamel compositions, appears in 49.0%. G02B optical elements follow at 22.1%. Because a single patent record can carry multiple IPC classes, these percentages add up to more than 100%, which is expected and simply reflects overlapping claim scope.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Solar Control and Coated Glazing covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.