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    "fn": "NIH/NCBI Data Team",
    "hasEmail": "mailto:info@ncbi.nlm.nih.gov"
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  "description": "PCT No. PCT/CH85/00038 Sec. 371 Date Nov. 7, 1985 Sec. 102(e) Date Nov. 7, 1985 PCT Filed Mar. 4, 1985 PCT Pub. No. WO85/03928 PCT Pub. Date Sep. 12, 1985.Optical glasses based on silica and alumina, rich in modifying metals such as silver, thallium and cesium. The exchange by cathodic migration in a melted salt bath of said modifying metals by metals such as K, Na and Li, exchange which leads to a corresponding variation of the refraction index of the glass according to a certain predetermined profile, is performed very efficiently and rapidly. Such an exchange is performed either on the finished glass or on a microporous form thereof.",
  "distribution": [
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      "description": "Access the complete Patent AT-E40098-T1: [Translated] ALUMINOSILICATES OPTICAL GLASS. on the official website.",
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      "mediaType": "text/html",
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  "identifier": "https://healthdata.gov/api/views/5nig-pfds",
  "issued": "2025-09-05",
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  "modified": "2025-09-06",
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  "publisher": {
    "@type": "org:Organization",
    "name": "National Center for Biotechnology Information (NCBI)"
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  "theme": [
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  "title": "Patent AT-E40098-T1: [Translated] ALUMINOSILICATES OPTICAL GLASS."
}