The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1989
Filed:
Feb. 24, 1988
Applicant:
Inventors:
Assignee:
Hamamatsu Photonics Kabushiki Kaisha, Shizuoka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01T / ;
U.S. Cl.
CPC ...
250369 ; 2502521 ;
Abstract
A method and portable apparatus for measuring radiation dose and identifying a source radionuclide. Energy correction to calibrate detected charge to .gamma.-ray energy level is made through the use of naturally occurring radiation from 40K in a potassium compound KCl. One embodiment includes a portable scintillator and photomultiplier (PMT) along with an accumulation memory, an input means, a signal processing circuit, a memory and an output means. A warning function informs of an abnormality when the difference between the measured radiation data and the standard data in the device memory exceeds a predetermined value.