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| Number | Title | Issue Date |
| 6833217 | Battery cathode A cathode that includes manganese dioxide and relatively small particles of nonsynthetic, nonexpanded graphite is disclosed. The graphite particles can have an average particle size of less than 20 microns. The cathode can be used in an electrochemical cell, such as... | 12/21/2004 |
| 6521378 | Electrode having multi-modal distribution of zinc-based particles An electrode containing zinc-based particles suspended in a fluid medium is disclosed. The zinc-based particles have a multi-modal distribution, such as a bi-modal distribution, of particle sizes, particle morphologies and/or particle compositions. The el... | 02/18/2003 |
| 6309775 | Prismatic electrochemical cell A sealed, prismatic electrochemical cell has an electrode plate comprising a porous structure with a maximum linear dimension of the porous structure in the principle direction of ion flow of at least 20 percent of the maximum linear dimension of the hous... | 10/30/2001 |
| 6298530 | Reinforced coiled electrode assemblies and methods of producing same The present invention relates to coiled electrode assemblies having conductive tabs, methods of attaching the conductive tabs to the coiled electrode, and electrochemical cells employing such assemblies. An electrode plate which is coated with active mate... | 10/09/2001 |
| 6284410 | Zinc electrode particle form A primary electrochemical cell with an anode comprising zinc alloy particles suspended in a fluid medium is disclosed. The zinc alloy particles include at least about 10 percent, by weight, of fines (particles of -200 mesh size) or dust (particles of -325... | 09/04/2001 |
| 6197448 | Hydrogen storage alloy A hydrogen storage alloy of the AB5 -type, where the A component includes La and/or Nd and at least 0.4 mole fraction Pr, as well as batteries including the alloy, are disclosed.... | 03/06/2001 |
| 6159634 | Battery separator A thin separator for batteries is provided. The separator includes a layer that reduces dendrite shorting and a nonwoven layer. Typically, the separator also includes a laminate layer disposed between the nonwoven layer and the layer which reduces dendrit... | 12/12/2000 |
| 6143446 | Battery cathode A cathode that includes manganese dioxide and a titanium oxy salt, preferably titanium oxy sulfate, is disclosed.... | 11/07/2000 |
| 6126704 | Method of forming a terminal pip protrusion on the casing of an alkaline cell The invention is directed to a method of forming a pip protrusion at the closed end of a cylindrical casing of an electrochemical cell. The cell is preferably an alkaline cell having an anode comprising zinc, a cathode comprising manganese dioxide, and an... | 10/03/2000 |
| 6083639 | Current interrupter for electrochemical cells A current interrupt assembly for electrochemical cells is disclosed. The current interrupter assembly may be a self-contained, sealed unit which may be separately inserted into the cell during cell construction. Several current interrupt assemblies may be... | 07/04/2000 |
| 6074783 | Hydrogen storage alloys for use in rechargeable electrochemical cells, and methods of producing them An AB5 -type hydrogen absorbing alloy composition for use in an electrochemical cell includes between about 0.001 and 0.01 mole percent of zirconium and/or titanium dispersed throughout the alloy. Methods of producing the alloy are also disclos... | 06/13/2000 |
| 6051957 | Battery pack having a state of charge indicator A battery pack for a portable electronic device includes a case for carrying a battery. The case supports a charge sensing circuit carried by the case, the charge sensing circuit producing a discharge signal corresponding to a measurement of an amount of ... | 04/18/2000 |
| 6045950 | Solvent for electrolytic solutions Electrolytic solutions containing a malonate ester having no alpha-carbon hydrogen atoms are disclosed. The electrolytic solutions can be used in lithium ion batteries.... | 04/04/2000 |
| 6025090 | End cap assembly for an alkaline cell An end cap assembly is disclosed for sealing the open end of a cylindrical alkaline cell housing preferably having a diameter less than the diameter of AAA size cells. The end cap assembly is preferably intended for sealing AAAA (LR61) size cylindrical al... | 02/15/2000 |
| 6001504 | Prismatic battery housing The invention features a prismatic battery with an electrically conductive housing comprising an elongated, prismatic can with an open end, and a housing cover pressed into the open end of the can and welded in place. The novel cover has an outer flange a... | 12/14/1999 |
| 5998051 | Current interrupter for electrochemical cells A current interrupt assembly for electrochemical cells is disclosed. The current interrupter assembly may be a self-contained, sealed unit which may be separately inserted into the cell during cell construction. Several current interrupt assemblies may be... | 12/07/1999 |
| 5984982 | Electrochemical synthesis of cobalt oxyhydroxide A method of manufacturing conductive cobalt oxyhydroxide, including providing a positive electrode, a negative electrode, a CoOOH precursor, and a basic solution to form a combination; applying a current to the positive electrode to form conductive CoOOH ... | 11/16/1999 |
| 5962158 | End cap assembly for electrochemical cell An end cap assembly for an electrochemical cell, for example an alkaline cell, is disclosed comprising an exposed terminal end cap of single piece construction having a convoluted surface, an electrically insulating member and a metal support disk between... | 10/05/1999 |
| 5958088 | Prismatic cell construction An electrochemical cell is disclosed, having a sealed prismatic housing with two opposing, internal side surfaces defining therebetween an internal cavity having width and length. One of the side surfaces defines a convex arc, and the other of the side su... | 09/28/1999 |
| 5948569 | Lithium ion electrochemical cell A lithium ion cell having an amount of a Group 1 element between the positive electrode and the negative electrode is described. The Group 1 element can be on an surface of an electrode separator as a deposit. The Group 1 element can increase the charging... | 09/07/1999 |
| 5925479 | Moisture barrier composite film of silicon nitride and fluorocarbon polymer and its use with an on-cell tester for an electrochemical cell A light transparent moisture barrier useful for preventing moisture from destroying the effectiveness of a moisture sensitive cell condition tester on an electrochemical cell, comprises a plurality of very thin layers of amorphous silicon nitride and a hy... | 07/20/1999 |
| 5879832 | Current interrupter for electrochemical cells A current interrupt mechanism for electrochemical cells is disclosed. A thermally activated current interrupt mechanism is integrated into an end cap assembly for an electrochemical cell. The thermally responsive mechanism preferably includes a free float... | 03/09/1999 |
| 5865874 | Hydrogen storage alloy The surface of material containing a hydrogen storage alloy are treated with an organometallic compound to provide the alloy with corrosion resistance.... | 02/02/1999 |
| 5863675 | Manganese dioxide for lithium batteries Disclosed is a process for treating manganese dioxide containing ion-exchangeable cations by replacing the ion-exchangeable cations present in the manganese dioxide with lithium by a process comprising first replacing ion-exchangeable cations present in t... | 01/26/1999 |
| 5856040 | Alkaline cell An improved high rate alkaline cell is obtained by employing an anode current collector comprising a foraminous metal.... | 01/05/1999 |
| 5783328 | Method of treating lithium manganese oxide spinel A method of treating lithium manganese oxide of spinel structure is disclosed. The method involves heating the lithium manganese oxide spinel in an atmosphere of an inert gas, e.g, argon, helium, nitrogen or carbon dioxide, which does not react with the s... | 07/21/1998 |
| 5759713 | Upward deflecting support disk for electrochemical cell seal A metal support disk useful in sealing an electrochemical cell exerts a resilient outward radial force against the seal to assure seal integrity over a wide temperature range and exerts an upward force against an adjacent metal end cap terminal to assure ... | 06/02/1998 |
| 5753202 | Method of preparation of lithium manganese oxide spinel A method of making lithium manganese oxide of spinel structure is disclosed. The method involves the step of prelithiating a manganese oxide by reacting it with lithium hydroxide or lithium salt and then reacting the prelithiated manganese oxide in a seco... | 05/19/1998 |
| 5750283 | Seal for electrochemical cell An electrochemical cell has a wheel shaped, molded plastic seal member of a unitary construction which includes a central cylindrical hub from which depend in outward radial sequence, an annular pressure vent, a boss, a downward projecting skirt, an annul... | 05/12/1998 |
| 5750277 | Current interrupter for electrochemical cells A current interrupt mechanism for electrochemical cells is disclosed. A thermally activated current interrupt mechanism is integrated into an end cap assembly for an electrochemical cell. The thermally responsive mechanism preferably includes a free float... | 05/12/1998 |
| 5750282 | Process for improving lithium ion cell The efficacy of a passivating layer in a rechargeable lithium ion cell is increased by heating the charged cell and storing the charged cell for a pre-determined period of time.... | 05/12/1998 |
| 5733685 | Method of treating lithium manganese oxide spinel A method of treating lithium manganese oxide of spinel structure is disclosed. The method involves heating the lithium manganese oxide spinel in an atmosphere of an inert gas which does not react with the spinel. Such gases may be selected advantageously ... | 03/31/1998 |
| 5698176 | Manganese dioxide for lithium batteries Disclosed is a process for treating manganese dioxide containing ion-exchangeable cations by replacing the ion-exchangeable cations present in the manganese dioxide with lithium by a process comprising first replacing ion-exchangeable cations present in t... | 12/16/1997 |
| 5693307 | Process for making a lithiated lithium manganese oxide spinel Disclosed is a process for making a lithiated lithium manganese oxide spinel of the formula Li.sub.(1+x)Mn2 04 comprising contacting a lithium manganese oxide spinel of the formula LiMn2 O4 with a lithium carbox... | 12/02/1997 |
| 5691073 | Current interrupter for electrochemical cells A current interrupt mechanism for electrochemical cells is disclosed. A thermally activated current interrupt mechanism is integrated into an end cap assembly for an electrochemical cell. The thermally responsive mechanism preferably includes a free float... | 11/25/1997 |
| 5681666 | Light transparent multilayer moisture barrier for electrochemical celltester and cell employing same A light transparent moisture barrier useful for preventing moisture from destroying the effectiveness of a moisture sensitive cell condition tester on an electrochemical cell comprises a plurality of very thin; alternating layers of an inorganic material ... | 10/28/1997 |
| 5679017 | Universal battery charger Disclosed is a charger unit for charging a rechargeable energy storage device. In particular, a universal charger unit is disclosed which comprises a connector having a set of externally accessible contacts for making electrical contact with a correspondi... | 10/21/1997 |
| 5657522 | Coiled electrode assemblies and methods of producing same The present invention relates to coiled electrode assemblies having conductive tabs, methods of attaching the conductive tabs to the coiled electrode, and electrochemical cells employing such assemblies. In the process of the invention, the conductive tab... | 08/19/1997 |
| 5632554 | Slurry forming process using an inflatable/collapsible bag within a mixing device A method for the production of slurries which are uniform in density and consistency. In particular, a method for preparing zinc anode slurries employed in producing anodes for alkaline batteries. The method comprises a bag slurry forming process, using a... | 05/27/1997 |
| 5632603 | Slurry transfer and densification through vacuum pumping An apparatus for the transfer or conveyance of a slurry and the simultaneous densification thereof through the intermediary of vacuum pumping. Specifically, disclosed is an apparatus for the vacuum pumping of a slurry, particularly a zinc-containing slurr... | 05/27/1997 |
