Patents by Inventor Edward J. Cairns

Edward J. Cairns 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).

  • Process for heating and chemically treating an aqueous process fluid
    Patent number: 4156545
    Abstract: An integrated system and process is provided to heat and chemically treat an aqueous process fluid such as the water required for producing sulfur by the Frasch process without undue scaling and corrosion of apparatus when a sulfur-containing fuel such as oil is employed as the energy source.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: May 29, 1979
    Assignee: Freeport Minerals Company
    Inventors: William J. Blanchard, Jr., Marion J. Dionne, Edward J. Cairns