Patents Assigned to The Radiochemical Centre Ltd.
  • Container system for dangerous materials
    Patent number: 4382512
    Abstract: A container system comprising an outer container containing a glass or plastics vial wherein the latter is to be opened without the danger of injury to the operator due to spillage from the vial. The outer container has a screw-top lid which has an engaging cavity whereby, once unscrewed from the container, it may be engaged with the top of the vial itself (which is revealed when the lid is unscrewed) and manipulated to remove the vial top in safety.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: May 10, 1983
    Assignee: The Radiochemical Centre Ltd.
    Inventor: Ronald J. Furminger
  • Process for concentrating technetium-99m
    Patent number: 4176158
    Abstract: The radioactive concentration of technetium-99m contained as pertechnetate ion in aqueous solution is increased by(1) acidifying the solution,(2) contacting the acid solution with a bifunctional ion-exchange material which is an anion-exchanger under acid conditions and a cation-exchanger under alkaline conditions, so that pertechnetate ion is retained thereon, and(3) eluting the pertechnetate ion with a small amount of aqueous alkaline liquid.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: November 27, 1979
    Assignee: The Radiochemical Centre Ltd.
    Inventors: John B. Laidler, Roy H. Abrahams
  • Ionization detectors
    Patent number: 4051376
    Abstract: A novel form of ionization detector, particularly one operating in the electron capture mode, is described. The detector includes iron-55 as a source of electrons to cause ionization. The detector may be operated in direct current, pulse or frequency modulated modes.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: September 27, 1977
    Assignee: The Radiochemical Centre Ltd.
    Inventors: Edgar Adolf Lorch, David John Dwight
  • Selenium-75 steroids
    Patent number: 3952030
    Abstract: Novel dimeric and monomeric selenium-75 derivatives of steroids are made by reacting a keto steroid with selenium-75 dioxide or selenious acid-Se75. The resulting diselenide dimers can be converted into monomeric compounds by the use of a cleaving reagent followed by an alkylating agent. The compounds are useful in saturation analyses such as radioimmunoassays.
    Type: Grant
    Filed: December 20, 1973
    Date of Patent: April 20, 1976
    Assignee: The Radiochemical Centre Ltd.
    Inventors: Virginia Edith May Chambers, Anthony Leonard Mark Riley
  • 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