Patents by Inventor Stephen N. Lowery

Stephen N. Lowery 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 metal recovery using electrochemical cell
    Patent number: 6149797
    Abstract: A high performance method for recovery of metal from aqueous solutions is carried out using an electrochemical cell having a cathode assembly that includes a nonporous support member, a primary cathode, and a nonconductive or conductive porous material covering the primary cathode. An anode is spaced apart from the cathode assembly. Fluid is caused to flow through the porous material to the primary cathode, through openings or fluid collection channels in the nonporous support member, and uniformly out of the cell. Uniform and efficient deposition of metal is accomplished over the entire cathode assembly because of modulation of fluid flow and increased mass transfer.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: November 21, 2000
    Assignee: Eastman Kodak Company
    Inventors: James J. Carey, Gary P. Wainwright, Stephen N. Lowery, Robert B. Call, Peter J. Kelch
  • Electrochemical cell for metal recovery
    Patent number: 6086733
    Abstract: A high performance electrochemical cell is useful for recovery of metal from aqueous solutions. The electrochemical cell has a cathode assembly that includes a nonporous support member, a primary cathode, and a nonconductive or conductive porous material covering the primary cathode. An anode is spaced apart from the cathode assembly. Fluid is caused to flow through the porous material to the primary cathode, through openings or fluid collection channels in the nonporous support member, and uniformly out of the cell. Uniform and efficient deposition of metal is accomplished over the entire primary cathode because of modulation of fluid flow and increased mass transfer.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: July 11, 2000
    Assignee: Eastman Kodak Company
    Inventors: James J. Carey, Gary P. Wainwright, Stephen N. Lowery, Robert B. Call, Peter J. Kelch
  • Removal of tin from seasoned photographic color developers
    Patent number: 5491048
    Abstract: A process for removing tin from seasoned photographic color developers containing tin as stannous or stannate complex ions, comprising the steps of:(a) collecting seasoned photographic color developer containing tin;(b) treating the collected developer with a resin having a chelating group selected from the group consisting of diphosphonic acid, amidoxime and thiol, thereby removing tin from the composition.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: February 13, 1996
    Assignee: Eastman Kodak Company
    Inventors: Ernest R. Anderson, Stephen N. Lowery
  • Method of electrolysis employing a doped diamond anode to oxidize solutes in wastewater
    Patent number: 5399247
    Abstract: A method of treating a solute in a liquid solution in order to render the solution more acceptable for discharge into the environment, comprises electrolyzing the solution with an anode comprising electrically conductive crystalline doped diamond to thereby oxidize the solute.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventors: James J. Carey, Charles S. Christ, Jr., Stephen N. Lowery