Patents by Inventor Piotr Sadkowski

Piotr Sadkowski 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 and apparatus for enriching ammonia
    Publication number: 20050034479
    Abstract: A process for enriching a crude ammonia stream having moisture and/or metal impurities and/or gas impurities therein. The crude ammonia stream is condensed to form a crude liquid ammonia stream. A distillation membrane or pervaporation membrane is contacted with the crude liquid ammonia stream to form an enriched ammonia vapor stream, which is removed as a permeate. When the crude ammonia stream originates from a manufacturing tool, the enriched ammonia vapor stream may be recycled to the manufacturing tool. There is also an apparatus for enriching a crude ammonia stream.
    Type: Application
    Filed: August 5, 2004
    Publication date: February 17, 2005
    Inventors: Wenchang Ji, Arthur Shirley, Piotr Sadkowski