Gamma radiation field intensity meter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5338938
SERIAL NO

08044678

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Abstract

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A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

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Patent Owner(s)

Patent OwnerAddress
MARTIN MARIETTA ENERGY SYSTEMS INC701 SCARBORO ROAD POST OFFICE BOX 2009 OAK RIDGE TN 37831

International Classification(s)

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  • 1993 Application Filing Year
  • G01T Class
  • 102 Applications Filed
  • 56 Patents Issued To-Date
  • 54.91 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1993199419951996199719981999200020010255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Thacker, Louis H Knoxville, TN 6 24

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  • 1 Citation Count
  • G01T Class
  • 1.27 % this patent is cited more than
  • 31 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges284391655122101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 80100 +051015202530354045505560657075808590

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