Patents by Inventor Peter B. Kramer

Peter B. Kramer 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).

  • Methods for attaching ligands or anti-ligands to a solid phase
    Patent number: 4689310
    Abstract: Methods for attaching one component of a ligand-anti-ligand pair onto a solid phase surface. The component may be attached to a photoactivatable cross-linker capable of coupling the component to a colloidal medium coating the surface or alternatively, the component may be coupled to a bead and held in place against the surface by an overlay of the colloidal media having voids and spaces smaller than the diameter of the particle but large enough to permit diffusion of the other of the ligand-anti-ligand pair to be detected.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: August 25, 1987
    Assignee: Ortho Diagnostic Systems Inc.
    Inventors: Peter B. Kramer, W. Peter Hansen
  • Fluorescence polarization immunoassay for heavy antigens
    Patent number: 4681859
    Abstract: Methods for determining the presence of large molecular weight aqueous ligands. The sample ligands are made to compete with user supplied fluorescently labeled peptides for binding sites on a ligand binding partner. Presence of aqueous ligand and binding of ligand binding partner thereto leaves the fluorescently labeled peptides free to exhibit fluorescence depolorization effects.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: July 21, 1987
    Assignee: Ortho Diagnostic Systems Inc.
    Inventor: Peter B. Kramer