Patents by Inventor Thomas K. Belval

Thomas K. Belval 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).

  • Nickel-free hemoglobin and methods for producing such hemoglobin
    Patent number: 5578564
    Abstract: According to the present invention removal of nickel from a nickel-containing hemoglobin solution is accomplished by exposing the nickel-containing hemoglobin solution to a chelating agent, preferably a multidentate acetic acid based chelator such as EDTA. Methods are provided that allow obtaining essentially nickel-free hemoglobin from nickel-containing hemoglobin solutions, particularly hemoglobin solutions that result from large scale fermentation and/or purification.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: November 26, 1996
    Assignee: Somatogen, Inc.
    Inventors: Mark L. Chivers, Thomas K. Belval