Patents by Inventor John Cecil Charlton

John Cecil Charlton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Centrifuge tube and method for performing assay with same
    Patent number: 4106907
    Abstract: A container for radioactive counting which is essentially a tube of organic plastics material which has a radiation shield extending up to the side of the tube to a uniform height. The container has a reaction zone of from 1 to 10ml with a tapered portion towards its lower end. From 1% to 10% of the reaction zone has within the zone surrounded by the radiation shield.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: August 15, 1978
    Assignee: The Radiochemical Centre Limited
    Inventors: John Cecil Charlton, John Stuart Glover, Bryan Peter Shepherd
  • Automatic volume counting
    Patent number: 3950643
    Abstract: In order to measure the level of radioactivity of liquids in a set of vessels, e.g. those employed in a competitive radio-assay, liquid is drawn successively from each one of the set into a measuring region defined inter alia by radiation shielding, so as to fill the region, the measurement takes place in the region, and the liquid is thereafter expelled.
    Type: Grant
    Filed: December 6, 1973
    Date of Patent: April 13, 1976
    Assignee: The Radiochemical Centre Ltd.
    Inventor: John Cecil Charlton
  • Composition comprising radioactive labeled-fibrinogen and albumin
    Patent number: 3933996
    Abstract: The stability of fibrinogen is improved by mixing it with albumin, preferably at least 5 parts by weight of albumin per part by weight of fibrinogen. By this invention, iodinated (.sup.125 I) human fibrinogen can be stabilised with human serum albumin for use in the diagnosis of thrombi.
    Type: Grant
    Filed: June 19, 1973
    Date of Patent: January 20, 1976
    Assignee: The Radiochemical Centre Limited
    Inventors: John Cecil Charlton, David Lawrence Gravett