Patents by Inventor Sheena Lesley Jackson

Sheena Lesley Jackson 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).

  • Process for preparing phosphorodiamidites
    Patent number: 7276620
    Abstract: A method of phosphorodiamidite production comprising the steps of reacting a phosphorus trihalide with a dialkyl amine in a polar solvent to form an intermediate compound. This intermediate compound is then subsequently reacted with an hydroxylalkyl compound and a dialkyl amine in the presence of a non-polar cosolvent. Following filtration to remove the solid by-product the two solvents form separate layers. This is advantageous as the upper, non-polar solvent, layer contains the high-purity phosphorodiamidite product.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: October 2, 2007
    Assignee: Rhodia Consumer Specialties Limited
    Inventors: Christopher John Harris, Sheena Lesley Jackson, David James Wilson