Patents by Inventor Matthew R. Sylvestre

Matthew R. Sylvestre 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).

  • Patent number: 6482543
    Abstract: An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: November 19, 2002
    Assignee: The Gillette Company
    Inventors: Alexander B. Shelekhin, Matthew R. Sylvestre, David V. Adamson, Michael F. Roberts, Tae-Won Lee