Patents by Inventor Robert D. Bridges

Robert D. Bridges 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 to produce a polytetra-fluoroethylene diaphragm
    Patent number: 4380521
    Abstract: The method of the present invention produces a porous, electrolyte permeable polytetrafluoroethylene diaphragm with a thickness of about 5 to about 100 mils and an average pore size of about 0.1 to about 100 microns. This diaphragm is suitable for use in an electrolytic diaphragm cell adapted to electrolytically form chlorine and an alkali metal hydroxide from an aqueous alkali chloride solution.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: April 19, 1983
    Assignee: The Dow Chemical Company
    Inventors: Carlos M. Moreno, Robert D. Bridges, Andre J. Uzee
  • Electrolytic diaphragm cell
    Patent number: 4224130
    Abstract: An electrolytic diaphragm cell to produce chlorine and an alkali metal hydroxide from an aqueous alkali metal chloride solution is disclosed. The cell has anode and cathodes spaced apart by a porous, electrolyte permeable polytetrafluoroethylene diaphragm with a thickness of about 5 to about 100 mils and an average pore size of about 0.1 to about 100 microns.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: September 23, 1980
    Assignee: The Dow Chemical Company
    Inventors: Carlos M. Moreno, Robert D. Bridges