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:
Jul. 12, 1977
Filed:
Aug. 20, 1976
Edgar G Johnson, Jr, Huntsville, AL (US);
Byron E Sturgis, Huntsville, AL (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
A gamma activity counter apparatus for use in automated radioimmunoassay systems including a scintillator counter which has two scintillator crystal-photomultiplier tube assemblies removably contained within a lead radiation shield. Each crystal has formed in it a sample receiving zone, each zone communicating with vertical bores formed in the radiation shield, so that a lifting means can lift sample carriers disposed beneath and in alignment with the sample receiving zones into the zones for gamma activity counting. The lift means is so designed that for each counting period, a pair of sample carriers, separated from each other by an even number of sample carrier spaces, is lifted into the sample receiving zones for simultaneous counting, the sample carriers being contained in holders that are continually advanced over the lift means in increments of two sample carrier spaces per increment. The sample carriers, arranged in a specified order in the holders, are counted out of order and this counting data is fed to a logic means in which the data is re-ordered, and this properly re-ordered data is fed to a data printing means.