Laminated automotive glazing patents: who holds the claim space and where it is still open
Concentrated at the top. Five companies hold 68.0% of the 153 records in scope, and ten hold 89.5% — a field where the claim space around lamination, acoustic interlayers and head-impact performance is largely staked out already. Filings ran from 4 in 2017 to a peak of 32 in 2018, then settled into a lower band; the 2021-to-2024 span shows a +33% rise (3 to 4 filings), and 2025-2026 figures are still incomplete due to publication lag.
- 1CENT GLASS CO LTD38
- 2AGP AMERICA21
- 33M INNOVATIVE PROPERTIES CO19
- 4ACR II GLASS AMERICA INC15
- 5GLASSTECH INC11
See the full laminated automotive 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 laminated automotive glazing patents
Who are the leading patent holders in laminated automotive glazing?
The assignee ranking for this field lists 19 companies in total, with the leading filer holding 38 of the 153 records in scope — more than three times the count at fifth place, which stands at 11. The top five combined account for 68.0% of all records, and the top ten account for 89.5%, so competitive attention concentrates on a small group rather than spreading evenly. Beyond the tenth position the ranking thins quickly, leaving a short tail of lower-volume filers.
Is laminated automotive glazing patent activity growing or slowing?
Filing activity peaked in 2018 at 32 records and has settled to a lower level since, but the 2021-to-2024 span still shows a +33% rise, from 3 filings to 4. Because publication typically lags filing by around 18 months, the 2025 and 2026 figures in any such dataset are necessarily incomplete and should not be read as a decline. The honest read is that the field's most recent complete year, 2024, shows growth rather than contraction.
What technology areas dominate laminated automotive glazing patents?
B32B, the layered-products-and-laminates classification, appears in 71.2% of the 153 records in scope, making it the dominant technical area by a wide margin. C03C glass and enamel compositions follow at 29.4%, and G02B optical elements at 22.2%. Because a single record can carry multiple IPC classes, these percentages add up to more than 100% of the record total — they describe overlapping claim coverage, not a strict partition of the field.
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 Laminated Automotive 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.