Patents by Inventor Stephen K. Youngster

Stephen K. Youngster 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).

  • Stable recombinant adenosine deaminase
    Patent number: 8071741
    Abstract: A mutein recombinant adenosine deaminase having any oxidizable cysteine residue replaced by a non-oxidizable amino acid residue is disclosed. Stabilized recombinant adenosine deaminase, polymer conjugates and methods of treatment using the same are also disclosed.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: December 6, 2011
    Assignee: Defiante Farmaceutica, S.A.
    Inventors: David R. Filpula, Stephen K. Youngster
  • STABLE RECOMBINANT ADENOSINE DEAMINASE
    Publication number: 20090047271
    Abstract: A mutein recombinant adenosine deaminase having any oxidizable cysteine residue replaced by a non-oxidizable amino acid residue is disclosed. Stabilized recombinant adenosine deaminase, polymer conjugates and methods of treatment using the same are also disclosed.
    Type: Application
    Filed: April 18, 2008
    Publication date: February 19, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: David R. Filpula, Stephen K. Youngster