Patents Assigned to eVionyx, Inc.
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Patent number: 7119126Abstract: The polymer matrix material includes a polymerization product of one or more monomers selected from the group of water-soluble, ethylenically-unsaturated acids and acid derivatives, and a crosslinking agent. A quantity of water is used for polymerization, such that the polymer material is swelled to a defined volume upon curing. Optionally, a water-soluble or water-swellable polymer and/or a chemical polymerization initiator.Type: GrantFiled: April 5, 2004Date of Patent: October 10, 2006Assignee: eVionyx, Inc.Inventors: Robert W. Callahan, Mark G. Stevens, Muguo Chen
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Patent number: 6933703Abstract: A power generating system is described including a plurality of electrochemical cells. The cells are generally arranged in sections that are selectively activated individually or in combination to produce power from selected cell sections. A method of generating power is also described. A first group of one or more electrochemical cells of an array of cells are selectively activated based on requirement of an associated load. The system switches to a second group of one or more electrochemical cells of the array when the first group is discharged.Type: GrantFiled: January 23, 2004Date of Patent: August 23, 2005Assignee: eVionyx, Inc.Inventors: Donald Dubac, Michael Glover, Haresh P. Kamath
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Patent number: 6878482Abstract: An anode structure for a metal air electrochemical cell is provided. The structure includes a plurality of compartments, which are at least partially isolated from one another. A metal air cell using the anode structure includes the anode structure having one or more of the compartments partially filled with anode material, a cathode in ionic communication with the anode material, and a separator electrically isolating the cathode and the anode material. The volume of anode material included in the one or more compartments is preferably based on the expected expansion of the anode material.Type: GrantFiled: June 4, 2002Date of Patent: April 12, 2005Assignee: eVionyx, Inc.Inventor: George Tzong-Chyi Tzeng
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Patent number: 6869710Abstract: A metal air cell system is provided. The system includes a cathode having a pair of oxidant sides and anode sides. An anode is provided in two parts, each part having a side complementary each anode side of the cathode. A separator is disposed between the anode and cathode to electrically isolate the anode and the cathode. Electrolyte is disposed between the cathode and the anode, the electrolyte provided within the anode, separately at the interface between the cathode and the anode, or both within the anode and separately at the interface between the cathode and the anode. This configuration generally allows a single oxidant flow to be exposed to both portions of the cathode due to the central passage of the oxidant.Type: GrantFiled: February 11, 2002Date of Patent: March 22, 2005Assignee: eVionyx, Inc.Inventors: George Tzong-Chyi Tzeng, Craig L. Cole
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Patent number: 6811910Abstract: A metal air cell system comprises a frame structure configured with variable airflow paths. The variable airflow paths provide alternatives between direct open loop airflow and semi-closed loop air flow, wherein air is at least partially circulated around the cell components. This is particularly useful for operation in different temperature environments. The open loop mode is useful for high temperature environments, and the semi-closed loop mode is useful for low temperature environments.Type: GrantFiled: July 18, 2002Date of Patent: November 2, 2004Assignee: Evionyx, Inc.Inventors: Tsepin Tsai, William F. Morris
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Patent number: 6713988Abstract: A power generating system is described including a plurality of electrochemical cells. The cells are generally arranged in sections that are selectively activated individually or in combination to produce power from selected cell sections. A method of generating power is also described. A first group of one or more electrochemical cells of an array of cells are selectively activated based on requirement of an associated load. The system switches to a second group of one or more electrochemical cells of the array when the first group is discharged.Type: GrantFiled: October 19, 2001Date of Patent: March 30, 2004Assignee: eVionyx, Inc.Inventors: Donald Dubac, Michael Glover, Haresh P. Kameth