Patents by Inventor Abdul R. Weiss

Abdul R. Weiss 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).

  • Dead-end membrane adsorbers
    Patent number: 5618418
    Abstract: A dead-end filtration unit without a housing comprising at least one filter cassette, each cassette comprising a plurality of laminar sections of porous adsorptive membrane, which have been rendered fluid-impermeable on their peripheries, the cassettes being sealingly compressed between two filter retainers fitted with feed inlet and permeate outlet and wherein the laminar sections are made of the same or different membrane adsorber types.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: April 8, 1997
    Assignee: Sartorius AG
    Inventors: Wolfgang Demmer, Hans-Heinrich Horl, Dietmar Nussbaumer, Abdul R. Weiss
  • Method for the surface modification of formed bodies and formed bodies produced thereby
    Patent number: 5547575
    Abstract: Fabrication of the surface-grafted microporous membranes by coating the membrane with an N-halogenated compound, followed by grafting with an unsaturated monomer and sodium dithionite in a primarily aqueous solution that may contain an organic halogen compound selected from carbon tetrachloride and trichloroacetic acid. The coating may be formed in situ and may be cross-linked.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: August 20, 1996
    Assignee: Sartorius AG
    Inventors: Wolfgang Demmer, Hans-Heinrich Horl, Dietmar Nussbaumer, Abdul R. Weiss, Eberhard Wunn