Patents by Inventor Gunther F. Geiling

Gunther F. Geiling 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).

  • Polyamide hollow fiber filtration membrane having barrier layer
    Patent number: 4722795
    Abstract: A filtration membrane is disclosed which has an ultrafiltration rate of between 200.times.10.sup.-4 and 500.times.10.sup.-4 ml/sec..times.cm.sup.2 .times.bar at 20.degree. C. and which is substantially impermeable to albumin of a molecular weight of about 44,000 or greater. A process for producing a filtration membrane is also disclosed in which a polymer solution is extruded with a center liquid under conditions such that the ratio of the volume of polymer solution to the volume of center liquid is within the range of from about 2:1 to about 4:1 to form a membrane extrudate.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: February 2, 1988
    Assignees: Gambro Dialysatoren KG, Gambro Lundia AB
    Inventors: Hermann J. Gohl, Georg B. Mayer, Gunther F. Geiling, Claes-Ake Gullberg