Patents by Inventor Hans Grunder

Hans Grunder 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).

  • Apparatus for producing a laminar flow
    Patent number: 4023472
    Abstract: A laminar flow producing means is described having a blower which passes air to a distributor having a buffer zone with a ratio between its volume and cross-sectional area A being smaller than 1/2.sqroot.A and two mesh screens spaced about 0.2 to 5 cm apart and each having mesh openings measuring about 0.001 to 1mm so that the air from the blower is passed through the screen meshes seriatim to produce a clean, dust-free laminar flow of air.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: May 17, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans Grunder, Walter Setz