Patents by Inventor John V. Padvelskis

John V. Padvelskis 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).

  • Patent number: 4590002
    Abstract: Methods for producing from human plasma or serum, human gamma globulin free of hepatitis-B-virus infectivity and products resulting therefrom. Specifically provided are ion exchange resin/buffer systems capable of effectively removing the virus.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: May 20, 1986
    Assignee: Ortho Diagnostic Systems, Inc.
    Inventors: Raymond P. Zolton, Paul M. Kaplan, John V. Padvelskis
  • Patent number: 4434093
    Abstract: Methods for producing from human serum, human gamma globulin essentially free of HB.sub.s Ag and products resulting therefrom. Specifically provided are ion exchange resin/buffer systems capable of effectively removing HB.sub.s Ag thought to be closely correlated with viral hepatitis type B infectivity. Additional steps can include ultrafiltration to increase reduction of any virus not removed in the column passage as well as the addition of anti-HB.sub.g to substantially eliminate all infectivity.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: February 28, 1984
    Assignee: Ortho Diagnostic Systems Inc.
    Inventors: Raymond P. Zolton, Paul M. Kaplan, John V. Padvelskis