Patents by Inventor Daniel A. Eakin

Daniel A. Eakin 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).

  • Wood impregnation
    Patent number: 4466998
    Abstract: Water-borne preservative salts are used to impregnate wood by the empty-cell pressure impregnation method without the precipitation of water-borne salts such as chromium, copper and arsenic when wood sugars enter the treating solution during the kickback or pressure release phase of the empty-cell cycle. The lack of precipitation is obtained by maintaining the preservative salts solution at a temperature between about 40.degree. F. and about 70.degree. F.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: August 21, 1984
    Assignee: Koppers Company, Inc.
    Inventors: Craig R. McIntyre, Daniel A. Eakin