# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/julius-edgar-lilienfeld
# Generated: 2026-08-15T00:32:10.840Z

schema: https://schema.org/Person
url: "https://fame.am/person/julius-edgar-lilienfeld"
name: "Julius Edgar Lilienfeld"
slug: "julius-edgar-lilienfeld"
description: "Julius Edgar Lilienfeld was an Austro-Hungarian, and later American\n electrical engineer and physicist who has been credited with the first patent on the field-effect transistor in 1925. He was never able to build a working practical semiconductor device based on his concept. Additionally, because he didn't publish articles in learned journals and since high-purity semiconductor materials were not available to him, his FET patent never achieved fame, causing confusion for later inventors."
tagline: "Austro-Hungarian physicist"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Julius_Edgar_Lilienfeld_(1881-1963).jpg?width=1200"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1882-04-18"
deathDate: "1963-08-28"
livingStatus: "DECEASED"
scores:
  popularity:           49.97
  momentum:             0
  historical:           17.070164
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
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    title: "尤利乌斯·埃德加·利林菲尔德"
    type:  "WIKIPEDIA"
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    title: "جوليوس إدغار ليلينفيلد"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%8A%D9%88%D9%84%D9%8A%D9%88%D8%B3_%D8%A7%D9%8A%D8%AF%D8%AC%D8%A7%D8%B1_%D9%84%D9%8A%D9%84%D9%8A%D9%8A%D9%86%D9%81%D9%8A%D9%84%D8%AF"
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    title: "ژولیوس ادقار لیلینفلد"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%DA%98%D9%88%D9%84%DB%8C%D9%88%D8%B3_%D8%A7%D8%AF%DA%AF%D8%A7%D8%B1_%D9%84%DB%8C%D9%84%DB%8C%D9%86%D9%81%D9%84%D8%AF"
    title: "ژولیوس ادگار لیلینفلد"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%A6%E3%83%AA%E3%82%A6%E3%82%B9%E3%83%BB%E3%82%A8%E3%83%89%E3%82%AC%E3%83%BC%E3%83%BB%E3%83%AA%E3%83%AA%E3%82%A8%E3%83%B3%E3%83%95%E3%82%A7%E3%83%AB%E3%83%88"
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    title: "율리우스 에드가 릴리엔펠트"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://oc.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Julius_Edgar_Lilienfeld"
    title: "Julius Edgar Lilienfeld"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9B%D0%B8%D0%BB%D0%B8%D0%B5%D0%BD%D1%84%D0%B5%D0%BB%D1%8C%D0%B4%2C_%D0%AE%D0%BB%D0%B8%D0%B9_%D0%AD%D0%B4%D0%B3%D0%B0%D1%80"
    title: "Лилиенфельд, Юлий Эдгар"
    type:  "WIKIPEDIA"
  - url: "https://uk.wikipedia.org/wiki/%D0%AE%D0%BB%D1%96%D1%83%D1%81_%D0%9B%D1%96%D0%BB%D1%96%D1%94%D0%BD%D1%84%D0%B5%D0%BB%D1%8C%D0%B4"
    title: "Юліус Лілієнфельд"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q697195"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump