Patents by Inventor Elsie J. Shrawder

Elsie J. Shrawder 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 isolating and purifying nucleic acids from biological samples
    Patent number: 4935342
    Abstract: The method of this invention is applicable to rapid separation, isolation, and purification of DNA or RNA from biological samples. The DNA/RNA may be in double-stranded or single-stranded form. The method is particularly advantageous for resolving genetic DNA or RNA found in bacteria, virus, and mammalian cells, and for use with samples of human bodily fluids and tissues, including stool, sputum, urine, and blood samples. DNA or RNA can be separated effectively from interfering components, particularly proteins, biological pigments and mucopolysaccharides. The method of the present invention can utilize commercially available strong or weak anion exchanger materials with selected solutions of known ionic strength for adsorption and elution.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: June 19, 1990
    Assignee: Syngene, Inc.
    Inventors: David B. Seligson, Elsie J. Shrawder