Patents by Inventor Druce Crump

Druce Crump 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).

  • METHOD OF FORMING AND SEPARATING TIN(II) FROM TIN(IV)
    Publication number: 20210290785
    Abstract: Tin(IV)-117m is reduced by an acidic antimony solution to tin(II)-117m. A chelant is added to the solution of tin(II)-117m, and the pH is raised, forming tin(II)-117m chelant complex. The chelant is a bifunctional chelant, preferably attached to a bioactive molecule and reacted with the tin(II)-117m to form a radiopharmaceutical.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 23, 2021
    Applicants: SnIP Holdings, Incorporated, SnIP Holdings, Incorporated
    Inventors: Druce Crump, Jaime Simon, Nigel R. Stevenson
  • High purity SN-117M compositions and methods of preparing same
    Patent number: 10563288
    Abstract: A method of purifying a high specific activity Sn-117m composition is provided that includes extracting an iodide complex of Sn-117m with an organic solvent from an acidic aqueous cadmium solution comprising a dissolved irradiated cadmium target, an acid, and a source of iodide. The organic solvent layer comprising the iodide complex of Sn-117m is substantially reduced in cadmium content. The Sn-117m may be back extracted into an aqueous solution.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: February 18, 2020
    Assignee: SnIP Holdings, Incorporated
    Inventors: Druce Crump, Jaime Simon, St. George George, Nigel R. Stevenson
  • HIGH PURITY SN-117M COMPOSITIONS AND METHODS OF PREPARING SAME
    Publication number: 20170204497
    Abstract: A method of purifying a high specific activity Sn-117m composition is provided that includes extracting an iodide complex of Sn-117m with an organic solvent from an acidic aqueous cadmium solution comprising a dissolved irradiated cadmium target, an acid, and a source of iodide. The organic solvent layer comprising the iodide complex of Sn-117m is substantially reduced in cadmium content. The Sn-117m may be back extracted into an aqueous solution.
    Type: Application
    Filed: August 4, 2015
    Publication date: July 20, 2017
    Inventors: Druce Crump, Jaime Simon, St. George George, Nigel R. Stevenson