Patents by Inventor Calvin R. Messing

Calvin R. Messing 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).

  • Immunoassay analytical elements containing vanadium IV(V.sup.+4)ions
    Patent number: 5516645
    Abstract: A dry immunoassay analytical element, for assaying a ligand, comprising a support bearing:(a) a labeled ligand zone;(b) a spreading zone; and(c) a receptor zone containing a fixed concentration of an immobilized receptor for the ligand and the labeled ligand and the receptor is covalently bonded to polymeric beads having a diameter in the range of 0.1 to 5 .mu.m;characterized in that the element contains a compound containing a vanadium IV (V.sup.+4) ion and the zones can be in the same or separate layers.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: May 14, 1996
    Assignee: Johnson & Johnson Clinical Diagnostics, Inc.
    Inventors: Daniel S. Daniel, David A. Hilborn, Calvin R. Messing
  • Mercury and benzothiazolium salt stabilization of a photographic recording material
    Patent number: 4885233
    Abstract: Photographic recording material is described which employs a combination of a mercury compound and a benzothiazolium compound to reduce chemical fog without adverse loss of photographic speed.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: December 5, 1989
    Assignee: Eastman Kodak Company
    Inventor: Calvin R. Messing