Patents by Inventor Klaus Mall

Klaus Mall 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 operating a compressor heat pump or a compressor refrigeration system in which ammonia is used as the refrigerant
    Patent number: 5413728
    Abstract: A process for operating a compressor heat pump or a compressor refrigeration system using ammonia as the refrigerant and a refrigerant compressor lubricated with a lubricant from the polyalkylene glycol family, The polyalkylene glycols used as lubricants have a specific composition and an amine is added thereto. Monofunctional or difunctional polyalkylene glycols are used as lubricants.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: May 9, 1995
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Klaus Mall, Siegfried Kussi