# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/waldo-semon
# Generated: 2026-08-13T14:24:12.032Z

schema: https://schema.org/Person
url: "https://fame.am/person/waldo-semon"
name: "Waldo Semon"
slug: "waldo-semon"
description: "Waldo Lonsbury Semon was an American inventor born in Demopolis, Alabama. He is credited with inventing methods for making polyvinyl chloride useful."
tagline: "American inventor (1898–1999)"
image: "https://upload.wikimedia.org/wikipedia/en/8/83/Waldo_Semon.jpg"
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: "1898-09-10"
deathDate: "1999-05-26"
livingStatus: "DECEASED"
scores:
  popularity:           44.56
  momentum:             8.511584051724137
  historical:           8.544673333333334
  currentAttention:     0
  sourceConfidence:     54.99999999999999
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BC%D0%BE%D0%BD%2C_%D0%A3%D0%BE%D0%BB%D0%B4%D0%BE"
    title: "Семон, Уолдо"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%88%D8%A7%D9%84%D8%AF%D9%88_%D8%B3%D9%85%D9%88%D9%86"
    title: "والدو سمون"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Waldo_Semon"
    title: "Waldo Semon"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Waldo_Semon"
    title: "Waldo Semon"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%88%D8%A7%D9%84%D8%AF%D9%88_%D8%B3%D9%85%D9%88%D9%86"
    title: "والدو سمون"
    type:  "WIKIPEDIA"
  - url: "https://hy.wikipedia.org/wiki/%D5%88%D6%82%D5%A1%D5%AC%D5%A4%D5%B8_%D5%8D%D5%A5%D5%B4%D5%B8%D5%B6"
    title: "Ուալդո Սեմոն"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Waldo_Semon"
    title: "Waldo Semon"
    type:  "WIKIPEDIA"
  - url: "https://oc.wikipedia.org/wiki/Waldo_Semon"
    title: "Waldo Semon"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Waldo_Semon"
    title: "Waldo Semon"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Waldo_Semon"
    title: "Waldo Semon"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q7961585"
    title: "Wikidata"
    type:  "WIKIDATA"

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