Patents by Inventor Karen A. Donato

Karen A. Donato 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).

  • Composite porous membranes
    Patent number: 5294342
    Abstract: The composite membrane is disclosed having a microporous support which is coated with an aqueous polyeurethane dispersion composition wherein the microporous support is surface treated. A process for making and a process for using the membrane is also disclosed.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: March 15, 1994
    Assignee: Hoechst Celanese Corporation
    Inventor: Karen A. Donato
  • Composite microporous membranes
    Patent number: 5294346
    Abstract: The composite membrane is disclosed having a microporous support which is coated with a polymer composition and a contact adhesive layer applied to said polymer. A process for making and a process for using the membrane is also disclosed.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: March 15, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Karen A. Donato, Lessie C. Phillips
  • Composite porous membranes
    Patent number: 5266391
    Abstract: The composite membrane is disclosed having a microporous support which is coated with a polymer selected from the group consisting of polyethylene oxide, polyacrylic acid, poly(methyl methacrylate) and polyacrylamide wherein there is no pore filing of the microporous support. A process for making and a process for using the membrane is also disclosed.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: November 30, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Karen A. Donato, Lessie C. Phillips