Patents by Inventor Ernst-Dieter Grafe

Ernst-Dieter Grafe 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).

  • Method and apparatus for cooling hot-pressed panels, especially wood chip and fiber panels
    Patent number: 6126883
    Abstract: A method of cooling hot-pressed panels, such as wood chip or fiber board panels or sheets, includes a first step in which the panels are intensively cooled from an initial temperature above 100.degree. C. down to a temperature of about 100.degree. C. by means of cooling water, a second step in which the panels are further cooled to a temperature below 60.degree. C. by using cooling air, and a third step of reconditioning the panels by exposing the panels to a vapor mixture of steam and volatile binder components that was evolved during the first step. The third reconditioning step can begin and take place already during the first cooling step, or between the first and second cooling steps.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: October 3, 2000
    Assignee: Lindauer Dornier Gesellschaft mbH
    Inventors: Gerhard Troetscher, Josef Krill, legally incapacitated, Ernst-Dieter Grafe