Photochromic compound, photochromic composition, photochromic article and spectacles
US-12577455-B2 · Mar 17, 2026 · US
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Patent family 83228094
This patent family groups 2 related publications across US. Members often share priority claims or equivalent filings in different countries.
| Field | Value |
|---|---|
| Family ID | 83228094 |
| Family type | — |
| Earliest priority | Mar 12, 2021 |
| First filing country | US |
| Member publications | 2 |
| Countries | US |
| Representative publication | US12577455B2 — Photochromic compound, photochromic composition, photochromic article and spectacles |
Representative publication
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US12577455B2 — Photochromic compound, photochromic composition, photochromic article and spectacles (published Mar 17, 2026)
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