Patents Represented by Attorney Janet P. Clark

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  • Process for making microporous membranes from poly(etheretherketone)-type polymers
    Patent number: 5064580
    Abstract: A method of preparing a microporous membrane from unsulfonated poly(etheretherketone)-type polymers.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: November 12, 1991
    Assignee: The Dow Chemical Company
    Inventors: Henry N. Beck, Richard A. Lundgard, Robert D. Mahoney
  • Novel aryl carbonate cyanoaryl ether gas separation membranes
    Patent number: 5034034
    Abstract: The invention relates to novel aryl carbonate cyanoaryl ether gas separation membranes and a method of separating gases using such membranes.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: July 23, 1991
    Assignee: The Dow Chemical Company
    Inventors: Edgar S. Sanders, Jr., Theodore L. Parker