Patents by Inventor Lois M. Speaker

Lois M. Speaker 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).

  • Method of modifying membrane surface with oriented monolayers of amphiphilic compounds
    Patent number: 4554076
    Abstract: A method of improving the separatory properties of membranes by the deposition of a fluorinated amphiphilic compound in an oriented Langmuir-Blodgett layer on the membrane surface so as to increase membrane selectivity and counteract membrane surface properties leading to fouling during liquid-liquid separations and enhance gas selectivities of membranes used for gas-gas separations. The use of a fluorinated long-chain pyridinium bromide is specifically disclosed.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: November 19, 1985
    Assignee: Georgia Tech Research Corporation
    Inventor: Lois M. Speaker
  • Materials having improved nonfouling characteristics and method of making same
    Patent number: RE33273
    Abstract: A method of improving the separatory properties of membranes by the deposition of a fluorinated amphiphilic compound in an oriented Langmuir-Blodgett layer on the membranes surface so as to increase membrane selectivity and counteract membrane surface properties leading to fouling during liquid-liquid separations and enhance gas selectivities of membranes used for gas-gas separations. The use of a fluorinated long-chain pyridinium bromide is specifically disclosed.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: July 24, 1990
    Assignee: Georgia Tech Research Corporation
    Inventor: Lois M. Speaker