Patents by Inventor William Donald Heitz

William Donald Heitz 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).

  • Cross-linked, water insoluble poly(N-glycidyl-piperazine)
    Patent number: 4018721
    Abstract: Sulfur dioxide can be adsorbed from gas mixtures using cross-linked, water-insoluble polymers of N-glycidylpiperazine or N-glycidyl polyalkylpiperazines as the adsorbents.
    Type: Grant
    Filed: February 4, 1976
    Date of Patent: April 19, 1977
    Assignee: Union Carbide Corporation
    Inventors: Robert James Cotter, Michael John Keogh, William Donald Heitz
  • Method for the adsorption of sulfur dioxide
    Patent number: 4003848
    Abstract: Sulfur dioxide can be adsorbed from gas mixtures using cross-linked, water-insoluble polymers of N-glycidyl piperazine or N-glycidyl polyalkylpiperazines as the adsorbents.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: January 18, 1977
    Assignee: Union Carbide Corporation
    Inventors: Robert James Cotter, Michael John Keogh, William Donald Heitz