Patents by Inventor Boyko Aladjov

Boyko Aladjov 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: 7435492
    Abstract: A hybrid fuel cell/battery including one or more electrochemical cell units comprising at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: October 14, 2008
    Assignee: Ovonic Fuel Cell Company LLC
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Hong Wang, Zdravko Menjak
  • Patent number: 7238446
    Abstract: An active composition for an electrode of an electrochemical cell. The active composition comprises an active electrode material and a conductive polymer. The electrochemical cell is preferably a battery cell or a fuel cell.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: July 3, 2007
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Bora Tekkanat, Srinivasan Venkatesan, Subhash K. Dhar
  • Publication number: 20070120091
    Abstract: A conductive additive for the positive nickel electrode for electrochemical cells which provides increased performance by suppressing an oxygen evolution reaction occurring parallel to the oxidation of nickel hydroxide, increasing conductivity of the electrode and/or consuming oxygen produced as a result of the oxygen evolution reaction.
    Type: Application
    Filed: January 25, 2007
    Publication date: May 31, 2007
    Inventors: Stanford Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Bora Tekkanat, Meera Vijan, Hong Wang, Subhash Dhar
  • Patent number: 7201857
    Abstract: A conductive additive for the positive nickel electrode for electrochemical cells which provides increased performance by suppressing an oxygen evolution reaction occurring parallel to the oxidation of nickel hydroxide, increasing conductivity of the electrode and/or consuming oxygen produced as a result of the oxygen evolution reaction.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: April 10, 2007
    Assignee: Texaco Ovonic Battery Systems, LLC
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Bora Tekkanat, Meera Vijan, Hong Wang, Subhash K. Dhar
  • Publication number: 20070054158
    Abstract: A combination of photovoltaic devices and solid state batteries. The solid state battery comprising at least one negative electrode which may include a metal hydride active material, at least one positive electrode including an active material, and an anionic exchange membrane disposed between said negative electrode and said positive electrode. The anionic exchange membrane may be selected from materials allowing the flow of hydroxyl ions therethrough while simultaneously electrically separating the positive and negative electrodes. The anionic exchange membrane may be selected from a number of different materials based on different chemistries which allow the flow of hydroxyl ions therethrough. The anionic exchange membrane may be comprised of a polystyrene-divinylbenzene-polyvinylchloride polymeric material. The photovoltaic devices may be amorphous silicon solar cells. The photovoltaic devices may be triple junction, tandem amorphous silicon solar cells.
    Type: Application
    Filed: January 10, 2006
    Publication date: March 8, 2007
    Inventors: Stanford Ovshinsky, Boyko Aladjov, Meera Vijan
  • Patent number: 7172710
    Abstract: A conductive additive for the positive nickel electrode for electrochemical cells which provides increased performance by suppressing an oxygen evolution reaction occurring parallel to the oxidation of nickel hydroxide, increasing conductivity of the electrode and/or consuming oxygen produced as a result of the oxygen evolution reaction.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: February 6, 2007
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Bora Tekkanat, Meera Vijan, Hong Wang, Subhash K. Dhar
  • Publication number: 20060234129
    Abstract: A solid state battery utilizing an anionic ion exchange membrane solid electrolyte. The solid electrolyte is used to replace the separator and the liquid electrolyte typically utilized in batteries. The solid electrolyte may be a polymeric material allowing the transfer of hydroxyl ions therethrough.
    Type: Application
    Filed: September 7, 2005
    Publication date: October 19, 2006
    Inventors: Stanford Ovshinsky, Boyko Aladjov, Meera Vijan
  • Publication number: 20060166101
    Abstract: An active composition for an electrode of an electrochemical device. The active composition comprises a nickel hydroxide material, a graphite material, and a polymeric binder.
    Type: Application
    Filed: June 25, 2003
    Publication date: July 27, 2006
    Inventors: Srinivasan Venkatesan, Binay Prasad, Kenneth Laming, Boyko Aladjov
  • Patent number: 7070878
    Abstract: A layered oxygen electrode incorporating a peroxide decomposition catalyst. The design of the oxygen electrode promotes oxygen dissociation and absorption within the oxygen electrode. The oxygen electrode has differing layers of hydrophobicity which allow chemical impregnation of the active catalyst material into the oxygen electrode where the active catalyst material is needed most.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: July 4, 2006
    Assignee: Ovonic Fuel Cell Company LLC
    Inventors: Srinivasan Venkatesan, Hong Wang, Stanford R. Ovshinsky, Boyko Aladjov, Subhash Dhar
  • Patent number: 7033699
    Abstract: Fuel cell cathodes and instant startup fuel cells employing the cathodes. The cathodes operate through the valency change mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such cathodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the cathode at all times.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: April 25, 2006
    Assignee: Ovonic Fuel Cell Company LLC
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Hong Wang, Boyko Aladjov
  • Patent number: 7029600
    Abstract: A complex aluminum hydride doped with a catalytic material adapted to increase the kinetics of hydrogen absorption/desorption of the aluminum hydride without reducing the hydrogen storage capacity of the aluminum hydride.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: April 18, 2006
    Assignee: Ovonie Fuel Cell LLC
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Meera Vijan, Subhash K. Dhar
  • Patent number: 7018740
    Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: March 28, 2006
    Assignee: Texaco Ovonic Fuel Cell LLC
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash K. Dhar, Kevin Fok, Thomas Hopper
  • Patent number: 7014953
    Abstract: The present invention discloses a fuel cell, which incorporates a bipolar plate. The regenerative bipolar fuel cell of the present invention contains at least one hydrogen electrode in contact with a hydrogen stream and at least one oxygen electrode in contact with an oxygen stream. At least one electrolyte chamber is in contact with the hydrogen electrode and at least one electrolyte chamber is in contact with the oxygen electrode. The electrolyte chambers provide mechanical support within the fuel cell and provide an uninterrupted pathway for an electrolyte solution to contact the hydrogen electrode and the oxygen electrode, respectively. At least one bipolar plate is positioned between the hydrogen electrode and the oxygen electrode. The bipolar plate has a hydrogen side in contact with the hydrogen electrode and an oxygen side in contact with the oxygen electrode.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: March 21, 2006
    Assignee: Texaco Ovoric Fuel Cell, LLC
    Inventors: Zdravko Menjak, Srinivasan Venkatesan, Boyko Aladjov, Latchezara M. Gradinarova, Hong Wang, Standford R. Ovshinsky, Subhash K. Dhar
  • Patent number: 7008706
    Abstract: A vehicle drive system powered by a hybrid fuel cell including at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: March 7, 2006
    Assignee: Ovonic Fuel Cell Company LLC
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Zdravko Menjak, Boyko Aladjov, Hong Wang
  • Patent number: 6998184
    Abstract: A hybrid fuel cell/battery including at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: February 14, 2006
    Assignee: Texaco Ovonic Fuel Cell, LLC
    Inventors: Srinivasan Venkatesan, Stanford R. Ovshinsky, Boyko Aladjov, Hong Wang, Zdravko Menjak, Subhash K. Dhar
  • Patent number: 6989216
    Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes electrode assemblies having a frame overmolded around the electrode to maintain a flow rates and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: January 24, 2006
    Assignee: Texaco Ovonic Fuel Cell LLC
    Inventors: Rajeev Puttaiah, Zdravko Menjak, Latchezara M. Gradinarova, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Stanford R. Ovshinsky
  • Patent number: 6960406
    Abstract: A fluorinated carbon based gas diffusion layer for use in hydrogen and oxygen electrodes. The fluorinated carbon based gas diffusion layer provides for uniform distribution of hydrogen or oxygen across the electrode while maintaining a high level of hydrophobicity within the gas diffusion layer.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: November 1, 2005
    Assignee: Texaco Ovonic Fuel Cell LLC
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Hong Wang, Boyko Aladjov, Subhash Dhar
  • Patent number: 6933072
    Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell contains multiple layers of electrodes which absorb and react hydrogen and oxygen. The fuel cell is designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. The design of the fuel cell provides a substantially more compact design by not requiring space to allow for the expansion and contraction of the electrodes within the fuel cell.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: August 23, 2005
    Assignee: Energy Conersion Devices, Inc.
    Inventors: Zdravko Menjak, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar, Stanford R. Ovshinsky
  • Patent number: 6926986
    Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes encapsulated electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and electrode plates to supply the electrodes with high concentrations of oxygen from air.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: August 9, 2005
    Assignee: Energy Conversion Devices
    Inventors: Stanford R. Ovshinsky, Ana Menjak, Thomas Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar
  • Patent number: 6920873
    Abstract: A portable heating pack utilizing a supercorroding metallic alloy that produces heat and gaseous hydrogen upon contacting a corroding liquid. The portable heating pack provides for the consumption and/or storage of the gaseous hydrogen rather than venting the gaseous hydrogen from the portable heating pack.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: July 26, 2005
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Srinivasan Venkatesan, Krishna Sapru, Boyko Aladjov