{
  "patent_number": "US 2485586",
  "country": "US",
  "title": "How the Geiger Counter Detects Invisible Radiation",
  "original_title": "Geiger counter",
  "summary": "A 1947 patent for a radiation detection device that uses a gas-filled tube to identify and count high-energy particles.",
  "what_it_does": "The device functions by using a sealed tube filled with a specific gas at low pressure. When a radioactive particle enters the tube, it ionizes the gas, creating a brief electrical pulse between the electrodes. This pulse is then amplified and recorded as a 'click' or a numerical count, providing a direct measurement of radiation levels in the immediate environment.",
  "what_it_does_not_cover": [
    "Does not cover solid-state radiation detectors like silicon diodes",
    "Does not cover scintillation counters that use light-emitting crystals",
    "Does not cover the fundamental physics of ionization itself",
    "Does not cover digital signal processing or modern computer-based data analysis"
  ],
  "filed": "1947-02-01",
  "granted": "1949-10-25",
  "expires": "1967-02-01",
  "status": "expired",
  "holder": "International Standard Electric Corp ",
  "holder_url": "https://patentbrief.org/company/international-standard-electric-corp",
  "inventors": [
    {
      "name": "Goldstein Ladislas",
      "url": "https://patentbrief.org/inventor/goldstein-ladislas"
    }
  ],
  "times_cited": 6,
  "tags": [
    "energy",
    "mechanical",
    "telecommunications"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/2485586/geiger-counter",
  "markdown_url": "https://patentbrief.org/patent/us/2485586/geiger-counter/md",
  "google_patents_url": "https://patents.google.com/patent/US2485586",
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      "countryCode": "US",
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    },
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}