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  "published_at": "2026-06-04T04:29:19Z",
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    "value": "Diffraction grating device, method of manufacturing the same, and optical apparatus including the diffraction grating device is marketed for licensing by Stanford University (OTL). It is documented in US patent US 11,747,528. The current assignee of record is Samsung Electronics Co Ltd. Google Patents reports its legal status as \u201cActive\u201d (an automated indicator, not a legal determination). Its expected expiration is 2041-05-15. Note: the patent's assignee of record is Samsung Electronics Co Ltd, not Stanford University (OTL); confirm that Stanford University (OTL) can license it before relying on this listing.",
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