Patents by Inventor Jaakko Lamminen

Jaakko Lamminen 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 and apparatus for charging and discharging electric energy
    Patent number: 5645952
    Abstract: A method and apparatus for storing and producing electrical energy in an electrochemical cell, where the cathode is a porous air electrode and the anode is a hydrogen-containing metal hydride. According to the invention, an overpressure is allowed to form inside the porous air electrode during charging, the said pressure preventing the formation of hydrogen bubbles on the metal hydride electrode. The overpressure remains at the desired level because the pores of the air electrode are made so small that the surface tension of the electrolytic solution penetrating into the pores seals the porous air electrode.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: July 8, 1997
    Assignee: Markku Lampinen
    Inventors: Markku Lampinen, Minna Viitanen, Jaakko Lamminen, Marina Fomino