Patents by Inventor Geoffrey B. Cox

Geoffrey B. Cox 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).

  • Fluorocarbon polymer support for chromatographic separations, diagnostic assays and enzyme immobilization
    Patent number: 5079155
    Abstract: A solid support useful for bioaffinity and ion-exchange separations and enzyme immobilization is provided. The support is based on a non-perfluorocarbon solid carrier core coated with a nonionic fluorosurfactant-coated fluorocarbon interlayer to which a ligand or a binder for the ligand is securely, but reversibly attached through a reactive perfluorocarbon anchor compound. Also provided is a solid support useful for size exclusion separations. Such support is based on a non-perfluorocarbon carrier core coated with a nonionic fluorosurfactant-coated fluorocarbon interlayer.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: January 7, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Geoffrey B. Cox, Robert K. Kobos
  • Process for porosity control and rehydroxylations of silica bodies
    Patent number: 4837195
    Abstract: The porosity of a porous silica body is increased in a controlled manner by contacting the body with an effective amount of ammonium bifluoride.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: June 6, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Geoffrey B. Cox, Richard W. Stout
  • Chromatographic supports for separation of oligonucleotides
    Patent number: 4767670
    Abstract: A chromatographic packing useful for the separation of oligonucleotides is disclosed. The packing includes an insert porous support particle and a silane bonded phase comprising a weak anion exchange group in close proximity to at least one polar non-ionic group.
    Type: Grant
    Filed: January 21, 1987
    Date of Patent: August 30, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Geoffrey B. Cox, Anthony Atkinson, Peter A. D. Edwardson, Michael D. Scawen