Patents by Inventor Catherine H. Roberts

Catherine H. Roberts 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).

  • Modified alkaline phosphatase
    Patent number: 4656128
    Abstract: This invention provides a proteolytically modified alkaline phosphatase which is irreversibly inactivated upon removal of divalent ions. The modified enzyme is particularly useful as a molecular biological or immunological reagent.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: April 7, 1987
    Assignee: Research Corporation
    Inventors: Jan F. Chlebowski, Catherine H. Roberts
  • Modified alkaline phosphatase
    Patent number: 4650760
    Abstract: This invention provides a proteolytically modified alkaline phosphatase which is irreversibly inactivated upon removal of divalent ions. The modified enzyme is particularly useful as a molecular biological or immunological reagent.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: March 17, 1987
    Assignee: Research Corporation
    Inventors: Jan F. Chlebowski, Catherine H. Roberts