Patents by Inventor Hubert Klutsch

Hubert Klutsch 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 for controlling a freeze drying process
    Patent number: 6163979
    Abstract: In a method for controlling a freeze drying process, a frozen product is arranged on temperature controlled surfaces (12) in an air-evacuated chamber (1) and undergoes a main drying and after-drying phase. During the main drying phase, the temperature of the ice surrounding said product is continuously measured. The pressure in the chamber and/or the temperature of the surfaces are modified during transition from the main drying phase to the after-drying phase. In order to avoid longer idle periods between the chamber (1) and the evacuation device (3, 4, 14) and to determine transition from the main drying phase to the after-drying phase, the pressure and/or the temperature of the surfaces during said transition are modified according to changes int he temperature of the ice.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: December 26, 2000
    Assignee: Steris GmbH
    Inventors: Georg-Wilhelm Oetjen, Peter Haseley, Hubert Klutsch, Marion Leineweber