Patents by Inventor Helmar Herbig

Helmar Herbig 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).

  • Gelatin membrane filters and method for producing the same
    Patent number: 6406906
    Abstract: Membrane filters for the collection and detection of air-borne microorganisms are made from gelatin treated with an osmoprotective agent and exhibit the capacity to at least double the number of viable bacteria captured in a given sample relative to conventional gelatin membrane filters.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: June 18, 2002
    Assignee: Sartorius AG
    Inventors: Helmar Herbig, Helmut Jaschhof, Khuong To Vinh