Patents by Inventor Jack W. Marple
Jack W. Marple 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).
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Publication number: 20120251860Abstract: The invention relates to primary electrochemical cells, in addition to methods for manufacturing and discharging the same, having a jellyroll electrode assembly that includes a positive electrode with a coating comprising iron disulfide deposited on a current collector situated on the outermost circumference of the jellyroll, a lithium-based negative electrode and a polymeric separator. More particularly, the invention relates to a cell design which optimizes cell capacity and substantially eliminates premature voltage drop-off on intermittent service testing by eliminating the edge effect through, for example, deliberately relieving stack pressure and/or extending the distance lithium ions proximate to the terminal end of the positive electrode must travel to undergo an electrochemical reaction in that region.Type: ApplicationFiled: March 28, 2011Publication date: October 4, 2012Applicant: EVEREADY BATTERY COMPANY, INC.Inventors: Jack W. Marple, Duane James, Weiwei Huang
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Patent number: 8124274Abstract: Electrochemical battery cells, and more particularly, to cells comprising a lithium negative electrode and an iron disulfide positive electrode. Before use in the cell, the iron disulfide has an inherent pH, or a mixture of iron disulfide and an pH raising additive compound have a calculated pH, of at least a predetermined minimum pH value. In a preferred embodiment, the pH raising additive compound comprises a Group IIA element of the Periodic Table of the Elements, or an acid scavenger or pH control agent such as an organic amine, cycloaliphatic epoxy, amino alcohol or overbased calcium sulfonate. In one embodiment, the iron disulfide particles utilized in the cell have a specific reduced average particle size range.Type: GrantFiled: June 17, 2005Date of Patent: February 28, 2012Assignee: Eveready Battery Company, Inc.Inventors: Jack W. Marple, Michael W. Wemple
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Publication number: 20120021266Abstract: A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.Type: ApplicationFiled: August 11, 2011Publication date: January 26, 2012Applicant: EVEREADY BATTERY COMPANY, INC.Inventors: Jack W. Marple, Michael W. Wemple
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Publication number: 20110250490Abstract: A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The positive electrode mixture containing the iron disulfide contains highly packed solid materials, with little space around the solid particles, to provide a high concentration of iron disulfide within the mixture. The separator is thin, to allow more space within the cell for active materials, yet strong enough to prevent short circuits between the positive and negative electrodes under abusive conditions, even when swelling of the cathode during cell discharge places additional stressed on the separator. As a result, the ratio of the interfacial capacity of the positive electrode to the electrode interfacial volume is high, as is the actual capacity on low rate/low power and high rate/high power discharge.Type: ApplicationFiled: June 22, 2011Publication date: October 13, 2011Applicant: EVEREADY BATTERY COMPANY, INC.Inventor: Jack W. Marple
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Patent number: 8007940Abstract: A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.Type: GrantFiled: February 17, 2010Date of Patent: August 30, 2011Assignee: Eveready Battery Company, Inc.Inventors: Jack W. Marple, Michael W. Wemple
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Patent number: 7968230Abstract: A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The positive electrode mixture containing the iron disulfide contains highly packed solid materials, with little space around the solid particles, to provide a high concentration of iron disulfide within the mixture. The separator is thin, to allow more space within the cell for active materials, yet strong enough to prevent short circuits between the positive and negative electrodes under abusive conditions, even when swelling of the cathode during cell discharge places additional stressed on the separator. As a result, the ratio of the interfacial capacity of the positive electrode to the electrode interfacial volume is high, as is the actual capacity on low rate/low power and high rate/high power discharge.Type: GrantFiled: May 13, 2010Date of Patent: June 28, 2011Assignee: Eveready Battery Company, Inc.Inventor: Jack W Marple
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Patent number: 7923137Abstract: An electrochemical battery cell with an aperture in the container or cell cover has the aperture sealed by an improved thermoplastic sealing member, which forms at least a part of the cell's pressure relief vent and is made from a material comprising a thermoplastic resin and more than 10 weight percent of a thermal-stabilizing filler, to provide an effective seal and a reliable pressure relief vent over a broad temperature range.Type: GrantFiled: October 9, 2003Date of Patent: April 12, 2011Assignee: Eveready Battery Company, Inc.Inventors: Mark A. Schubert, Jack W. Marple
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Patent number: 7919202Abstract: An electrochemical battery cell with an aperture in the container or cell cover has the aperture sealed by an improved thermoplastic sealing member, which forms at least a part of the cell's pressure relief vent and is made from a material comprising a thermoplastic resin and more than 10 weight percent of a thermal-stabilizing filler, to provide an effective seal and a reliable pressure relief vent over a broad temperature range.Type: GrantFiled: November 21, 2007Date of Patent: April 5, 2011Assignee: Eveready Battery Company, Inc.Inventors: Mark A. Schubert, Jack W. Marple
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Publication number: 20110008660Abstract: The invention relates to primary electrochemical cells having a jellyroll electrode assembly that includes a lithium-based negative electrode, a positive electrode with a coating comprising iron disulfide deposited on a current collector and a polymeric separator. More particularly, the invention relates to a cell designs and cathode formulations incorporating specific types of conductors to improve cell performance.Type: ApplicationFiled: August 26, 2010Publication date: January 13, 2011Applicant: EVEREADY BATTERY COMPANY, INC.Inventors: Jack W. Marple, Weiwei Huang, Michael W. Wemple
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Publication number: 20100273036Abstract: A electrochemical cell design, with particular applicability to lithium-iron disulfide batteries, is disclosed. The cell includes a spirally wound electrode assembly with a central core. The core causes uniform expansion within the cathode. The core may also collapse and/or possess a cross sectional shape that differs from the cross sectional shape of the cylindrical container which houses the electrode assembly.Type: ApplicationFiled: June 24, 2010Publication date: October 28, 2010Applicant: Eveready Battery Company, Inc.Inventors: Jack W. Marple, Michael F. Mansuetto, Matthew T. Wendling, Weiwei Huang, James Xixian Wu
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Publication number: 20100221588Abstract: A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The positive electrode mixture containing the iron disulfide contains highly packed solid materials, with little space around the solid particles, to provide a high concentration of iron disulfide within the mixture. The separator is thin, to allow more space within the cell for active materials, yet strong enough to prevent short circuits between the positive and negative electrodes under abusive conditions, even when swelling of the cathode during cell discharge places additional stressed on the separator. As a result, the ratio of the interfacial capacity of the positive electrode to the electrode interfacial volume is high, as is the actual capacity on low rate/low power and high rate/high power discharge.Type: ApplicationFiled: May 13, 2010Publication date: September 2, 2010Applicant: Eveready Battery CompanyInventor: Jack W. Marple
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Publication number: 20100151303Abstract: A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.Type: ApplicationFiled: February 17, 2010Publication date: June 17, 2010Applicant: EVEREADY BATTERY COMPANY, INC.Inventors: Jack W. Marple, Michael W. Wemple
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Publication number: 20090104520Abstract: The invention relates to electrochemical cells having a jellyroll electrode assembly that includes a lithium-based negative electrode, a positive electrode with a coating comprising greater than about 94 wt. % of iron disulfide.Type: ApplicationFiled: October 17, 2008Publication date: April 23, 2009Applicant: EVEREADY BATTERY COMPANY, INC.Inventor: Jack W. Marple
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Publication number: 20080026293Abstract: A primary electrochemical cell, and a method for making the same, relies upon a jellyroll electrode with a positive electrode material deposited on a conductive carrier having partially uncoated portion wherein electrochemically active material is coated on only one side of the carrier in order to achieve superior performance in comparison to a cell having no such uncoated portion. The partially uncoated portion is oriented along a longitudinal axis of the jellyroll. The positive electrode material is preferably iron disulfide, whereas the negative electrode comprises lithium or a lithium alloy.Type: ApplicationFiled: October 17, 2006Publication date: January 31, 2008Inventors: Jack W. Marple, David A. Kaplin
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Publication number: 20080026288Abstract: An electrochemical cell, particularly an electrochemical cell having a container with a positive polarity. In one embodiment, the cell is a primary cell that includes an electrode assembly having a lithium negative electrode and a positive electrode, preferably comprising iron disulfide. The cell is provided with a spiral wound electrode assembly with a portion of the positive electrode contacting the container. The positive electrode current collector contacts the container in one embodiment. The negative electrode includes an electrically conductive member that electrically contacts a cover of the cell and provides the cover with a negative polarity. In a preferred embodiment, the electrically conductive member makes pressure contact with a portion of the cell cover. A method of manufacturing such a cell is also provided.Type: ApplicationFiled: July 26, 2006Publication date: January 31, 2008Inventors: Jack W. Marple, David A. Kaplin
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Patent number: 7157185Abstract: This invention relates to a nonaqueous cell comprising a lithium metallic foil anode and a cathode coating comprising iron disulfide as the active material wherein the coating is applied to at least one surface of a metallic substrate that functions as the cathode current collector. In particular, the cell of the within invention has improved performance on high rate discharge and is achieved, surprisingly, with an anode underbalance. The cell of the within invention has an anode to cathode input that is less than or equal to 1.0. We have discovered, unexpectedly, that the energy density for the cell both volumetrically and gravimetrically can be improved by approximately 20 to 25% while only increasing the volume of the cathode coating solids by approximately 10% through a unique and novel cathode coating formulation used in conjunction with a lithium foil anode.Type: GrantFiled: October 29, 2004Date of Patent: January 2, 2007Assignee: Eveready Battery Company, Inc.Inventor: Jack W. Marple
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Patent number: 6849360Abstract: This invention relates to a nonaqueous cell comprising a lithium metallic foil anode and a cathode coating comprising iron disulfide as the active material wherein the coating is applied to at least one surface of a metallic substrate that functions as the cathode current collector. In particular, the cell of the within invention has improved performance on high rate discharge and is achieved, surprisingly, with an anode underbalance. The cell of the within invention has an anode to cathode input that is less than or equal to 1.0. We have discovered, unexpectedly, that the energy density for the cell both volumetrically and gravimetrically can be improved by approximately 20 to 25% while only increasing the volume of the cathode coating solids by approximately 10% through a unique and novel cathode coating formulation used in conjunction with an alloyed lithium foil.Type: GrantFiled: June 5, 2002Date of Patent: February 1, 2005Assignee: Eveready Battery Company, Inc.Inventor: Jack W. Marple
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Publication number: 20030228518Abstract: This invention relates to a nonaqueous cell comprising a lithium metallic foil anode and a cathode coating comprising iron disulfide as the active material wherein the coating is applied to at least one surface of a metallic substrate that functions as the cathode current collector. In particular, the cell of the within invention has improved performance on high rate discharge and is achieved, surprisingly, with an anode underbalance. The cell of the within invention has an anode to cathode input that is less than or equal to 1.0. We have discovered, unexpectedly, that the energy density for the cell both volumetrically and gravametrically can be improved by approximately 20 to 25% while only increasing the volume of the cathode coating solids by approximately 10% through a unique and novel cathode coating formulation used in conjunction with an alloyed lithium foil.Type: ApplicationFiled: June 5, 2002Publication date: December 11, 2003Inventor: Jack W. Marple
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Patent number: 5290414Abstract: A separator/electrolyte combination for nonaqueous cells in which the electrolyte comprises a solute dissolved in a dioxolane and acyclic ether-based solvent, such as 1,2-dimethoxyethane, and the separator has a pore size between 0.005 and 5 microns, a porosity between 30% and 70%, a resistance between 2 and 15 ohm-cm.sup.2, and a tortuosity of less than 2.5.Type: GrantFiled: May 15, 1992Date of Patent: March 1, 1994Assignee: Eveready Battery Company, Inc.Inventor: Jack W. Marple
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Patent number: RE41886Abstract: This invention relates to a nonaqueous cell comprising a lithium metallic foil anode and a cathode coating comprising iron disulfide as the active material wherein the coating is applied to at least one surface of a metallic substrate that functions as the cathode current collector. In particular, the cell of the within invention has improved performance on high rate discharge and is achieved, surprisingly, with an anode underbalance. The cell of the within invention has an anode to cathode input that is less than or equal to 1.0. We have discovered, unexpectedly, that the energy density for the cell both volumetrically and gravimetrically can be improved by approximately 20 to 25% while only increasing the volume of the cathode coating solids by approximately 10% through a unique and novel cathode coating formulation used in conjunction with a lithium foil anode.Type: GrantFiled: February 16, 2007Date of Patent: October 26, 2010Assignee: Eveready Battery Company, Inc.Inventor: Jack W. Marple