Patents by Inventor Frank Model

Frank Model 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 preparing liquophilic polyamide membrane filter media and product
    Patent number: 4340480
    Abstract: A process is provided for preparing skinless liquophilic alcohol-insoluble polyamide membranes by preparing at a first temperature a solution in a polyamide solvent having a temperature coefficient of solubility within the range from about 0.01 to about 5 weight percent per degree Centigrade of an alcohol-insoluble polyamide resin having a ratio CH.sub.2 :NHCO of methylene CH.sub.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: July 20, 1982
    Assignee: Pall Corporation
    Inventors: David B. Pall, Frank Model