Patents by Inventor Harold Stern

Harold Stern 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).

  • Cytomegalovirus attenuation method and vaccine
    Patent number: 4058598
    Abstract: An attenuated strain of cytomegalovirus is prepared by serial passage in human tissue culture cells. The stain of virus so attenuated is incorporated into vaccines and used for developing immunity in humans against infections with cytomegalovirus.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: November 15, 1977
    Inventors: Harold Stern, Stephen Dyonis Elek
  • Fractionation of proteins by electrical means
    Patent number: 3972791
    Abstract: A process for the fractionation of liquid solutions of protein mixtures which includes the steps of subjecting such solutions to electrodialysis in the pH range 4.8 to 6, until desalting of the solution commences, said electrodialysis being conducted at temperatures below 15.degree.C; and continuing said electrodialysis until the specific resistance of the mixture exceeds 1000 ohm-cm whereby a fraction of said protein mixture precipitates; and recovering the dialysate. Another aspect of the invention is an albumin concentrate for use in the preparation of plasma extenders, having at least 90% albumin, free from salts, euglobulins and euglobulin-like materials.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: August 3, 1976
    Inventor: Harold Stern