Patents by Inventor Peter G Bowles

Peter G Bowles 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).

  • Pouch cell construction
    Patent number: 7629077
    Abstract: An electrode assembly is formed by respectively overlaying a sheet cathode 1, a sheet separator 3 and a double-sided sheet anode 8 to form a stacked structure 10, and subjecting the stacked structure to multiple folds, wherein the initial fold comprises folding the cathode in half around the double-sided anode so as to surround the respective upper and lower active anode surfaces thereof. The multiple folds may comprise one or more subsequent parallel folds made with the fold line D-D extending perpendicular to the original length of the stacked structure such that its overall length is halved at each fold. A pouch battery comprising said electrode assembly has improved safety and performance characteristics. The pouch battery construction has especial application to lithium primary batteries.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: December 8, 2009
    Assignee: Qinetiq Limited
    Inventors: Peter G Bowles, Emmanuel I Eweka, Cyril O Giwa, Andrew G Ritichie
  • Synthesis of lithium iron sulphides and their use as cathodes
    Patent number: 7018603
    Abstract: A process for the production of a lithium transition metal sulphide such as lithium iron sulphide, the process comprising reacting a transition metal sulphide with lithium sulphide in a solvent comprising a molten salt or a mixture of molten salts. Lithium transition metal sulphides obtained using this process are useful in the production of electrodes, in particular for rechargeable lithium batteries.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: March 28, 2006
    Assignee: Qinetiq Limited
    Inventors: Andrew G Ritchie, Peter G Bowles
  • Process for producing a lithium transition metal sulphide
    Patent number: 6740301
    Abstract: A process for the production of a lithium transition metal sulphide such as lithium iron sulphide, the process comprising reacting a transition metal sulphide with lithium sulphide in a solvent comprising molten sulphur. Lithium transition metal sulphides obtained using this process are also claimed and are useful in the production of electrodes, in particular for rechargeable lithium batteries.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: May 25, 2004
    Assignee: QinetiQ Limited
    Inventors: Andrew G Ritchie, Peter G Bowles
  • Synthesis of lithium transition metal sulphides
    Publication number: 20040018141
    Abstract: A process for the production of a lithium transition metal sulphide such as lithium iron sulphide, the process comprising reacting a transition metal sulphide with lithium sulphide in a solvent comprising a molten salt or a mixture of molten salts. Lithium transition metal sulphides obtained using this process are also claimed and are useful in the production of electrodes, in particular for rechargeable lithium batteries.
    Type: Application
    Filed: June 4, 2003
    Publication date: January 29, 2004
    Inventors: Andrew G. Ritchie, Peter G. Bowles