Patents by Inventor Wolfgang O. Tiedemann

Wolfgang O. Tiedemann 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).

  • Patent number: 4530165
    Abstract: Solvent-treated objects are dried in a drying chamber having a drying zone and at least one transfer zone for introducing into and/or removal from the drying zone of the object. The drying zone is created by recirculating drying air at high air flow rate by selectively sucking air from and blowing air into the drying zone and by removing recirculated solvent-carrying air from the drying zone by suction to provide a negative pressure in the drying chamber with greatest negative pressure in the drying chamber in the drying zone. Removed drying air is preferably passed through a solvent recovery carbon filter.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: July 23, 1985
    Assignee: Vico Kemisk Tekniska Fabrik AB
    Inventor: Wolfgang O. Tiedemann