Patents by Inventor Mei-Tsu Lee

Mei-Tsu Lee 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).

  • Badiation cured solid electrolytes and electrochemical devices employing the same
    Patent number: 5238758
    Abstract: A method for forming an interpenetrating polymeric network containing a liquid electrolyte for use in solid state electrochemical cells which comprises forming a mixture of a liquid monomeric or prepolymeric radiation polymerizable, compound, a radiation inert ionically conducting liquid, and an ionizable alkaline metal salt; subjecting said mixture to actinic radiation to thereby crosslink said radiation polymerizable ionically conducting material and form a solid matrix containing said ionically conducting liquid; and electrode half elements and electrochemical cells incorporating said network.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: August 24, 1993
    Assignee: MHB Joint Venture
    Inventors: Mei-Tsu Lee, Dale R. Shackle, Gerhart Schwab
  • Preparation of radiation cured solid electrolytes and electrochemical devices employing the same
    Patent number: 5037712
    Abstract: A method is described for forming a solid electrolyte comprising a polymeric network structure containing an ionically conducting liquid for use in solid state electrochemical cells which comprises forming a mixture of a crosslinkable polysiloxane or a crosslinkable polyethylene oxide, an ionically conducting liquid, and an ionizable ammonium or alkali metal salt, and subjecting said mixture to actinic radiation to thereby crosslink said crosslinkable polysiloxane or crosslinkable polyethylene oxide to form a solid matrix through which said ionically conducting liquid interpenetrates to provide continuous paths of high conductivity in all directions throughout said matrix.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: August 6, 1991
    Assignee: Ultracell, Inc.
    Inventors: Dale R. Shackle, Mei-Tsu Lee
  • Composite solid electrolytes and electrochemical devices employing the same
    Patent number: 4990413
    Abstract: A composite solid electrolyte comprising a mixture of a solid ionically conductive powder and an ionically conductive polymeric material wherein said polymeric material provides a network for containing said solid ionically conductive powder, and a method for producing the electrolyte is disclosed.
    Type: Grant
    Filed: January 18, 1989
    Date of Patent: February 5, 1991
    Assignee: MHB Joint Venture
    Inventors: Mei-Tsu Lee, Denis Fauteux
  • Radiation cured solid electrolytes and electrochemical devices employing the same
    Patent number: 4830939
    Abstract: A method for forming an interpenetrating polymeric network containing a liquid electrolyte for use in solid state electrochemical cells which comprises forming a mixture of a liquid monomeric or prepolymeric radiation polymerizable, compound, a radiation inert ionically conducting liquid, and an ionizable alkaline metal salt; subjecting said mixture to actinic radiation to thereby crosslink said radiation polymerizable ionically conducting material and form a solid matrix containing said ionically conducting liquid; and electrode half elements and electrochemical cells incorporating said network.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: May 16, 1989
    Assignee: MHB Joint Venture
    Inventors: Mei-Tsu Lee, Dale R. Shackle, Gerhart Schwab
  • Liquid containing polymer networks as solid electrolytes
    Patent number: 4792504
    Abstract: A solid polymeric electrolyte comprising a continuous network of crosslinked polyethylene oxide containing an ionic conducting phase which includes a metal salt and a dipolar aprotic solvent.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: December 20, 1988
    Assignee: MHB Joint Venture
    Inventors: Gerhart Schwab, Mei-Tsu Lee
  • Electrochemical bleaching of wood pulps
    Patent number: 4617099
    Abstract: A process for electrochemically bleaching pulp which comprises dispersing a pulp in a solution of sodium chloride to provide a first pulp slurry; subjecting said pulp slurry to electrolysis at a pH in the range of about 0 to 2.0; filtering said pulp slurry to remove said pulp; dispersing said pulp in a second solution of sodium chloride to provide a second pulp slurry; subjecting said second pulp slurry to electrolysis at a pH greater than 8.0; and recovering said pulp.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: October 14, 1986
    Assignee: The Mead Corporation
    Inventors: Gerhart Schwab, Mei-Tsu Lee, James W. Bentley