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| Number | Title | Issue Date |
| 7981549 | Separator for a battery having a zinc electrode The instant invention is a separator for a battery having a zinc electrode. The battery separator according to the instant invention includes a microporous membrane, and a coating on at least one surface of the microporous membrane. The coating includes a mixture of... | 07/19/2011 |
| 7329623 | Durable hydrophilic nonwoven mat A nonwoven web of a wettable fiber matrix, wherein the wettable fiber matrix are thermoplastic polymeric fibers blended with at least one hydrophilic melt additive. In alternate embodiments, the nonwoven web further includes binder fibers which may be wettable or no... | 02/12/2008 |
| 7323273 | Shutdown separators with improved properties A microporous polyolefin battery separator membrane is extremely high in porosity, high in puncture strength, very low in shrinkage and with shutdown temperature of 130-140 degrees C. and melt integrity greater than 165 degrees C. It is made of UHMWPE having a weigh... | 01/29/2008 |
| 7267909 | Battery separators containing reactive functional groups A battery separator having a thermal shutdown mechanism and exhibiting excellent mechanical properties and low electrical resistance includes a water-scavenging and/or acid-scavenging material having reactive functional groups that chemically react with water or aci... | 09/11/2007 |
| 7214444 | Melt blown battery separator Battery separators made of a wettable, uniform mat of melt blown fibers. The melt blown fibers are thermally bonded to one another. These fibers are made of a thermoplastic material. The fibers have a diameter in the range of 0.1 to 13 microns (μ) and lengths great... | 05/08/2007 |
| 7183020 | Separator for battery and lithium ion battery using the same A battery separator of the invention is obtained by press forming a meltblown nonwoven fabric comprising 4-methyl-1-pentene polymer or a 4-methyl-1-pentene/α-olefin copolymer, the battery separator having an average fiber diameter of 0.8 to 5 μm, a basis weight of... | 02/27/2007 |
| 7112389 | Batteries including improved fine fiber separators Alkaline and lithium batteries are disclosed that advantageously include separators comprising at least one porous layer of fine fibers having a diameter of between about 50 nm and about 3000 nm that provide improved combinations of reduced thickness, dendritic barr... | 09/26/2006 |
| 7087269 | Multi-component composite membrane and method for preparing the same The present invention relates to a multi-component composite separate membrane and a method for preparing the same, and to a multi-component composite membrane comprising a support layer and active layers, wherein the support layer is located between the active laye... | 08/08/2006 |
| 7087343 | High melt integrity battery separator for lithium ion batteries The battery separator for a lithium battery is made from a nonwoven flat sheet material having high temperature melt integrity, a microporous membrane having low temperature shutdown properties, and an adhesive bonding the nonwoven flat sheet to the microporous memb... | 08/08/2006 |
| 7070884 | Separator with improved barrier performance The present invention is directed to a nonwoven composite fabric for use on batteries or fuel cells comprising one or more layers of fine denier spunbond filaments and at least one layer of barrier material, wherein said nonwoven composite fabric has an improved bar... | 07/04/2006 |
| 7063917 | Laminated battery separator material A nonwoven material having a laminated construction and including a first layer of nonwoven fibers defining a first surface of the material; a second layer of nonwoven fibers defining the opposite surface of the material; and a third layer of nonwoven fibers located... | 06/20/2006 |
| 7052800 | Separator for nickel-metal hydride storage battery and nickel-metal hydride storage battery A separator for a nickel-metal hydride storage battery having a hydrogen-absorbing alloy as a negative electrode. The separator is a laminate of a substrate and a porous hydrophilic film. ... | 05/30/2006 |
| 7033704 | Alkaline storage battery having a separator with pores An alkaline storage battery comprises: a positive electrode plate; a negative electrode plate; a separator; and an alkaline electrolyte retained by the positive electrode plate, the negative electrode plate, and the separator, wherein the separator has a large numbe... | 04/25/2006 |
| 6994935 | Process for producing separator for batteries, the separator for batteries, and alkaline storage batteries using the same The present invention relates to the separator for batteries wherein the non-woven cloth comprising fibers mainly composed of polyolefin type resin is provided with hydrophilic property on the fiber surface at least by sulfuric compound and characterized as follows:... | 02/07/2006 |
| 6955865 | Graft polymerization, separators, and batteries including the separators A non-woven sheet of polyolefin fibers having opposed major surfaces is disclosed. Some areas of one or both of the major surfaces are hydrophilic as a consequence of an acrylic graft polymerized with the surfaces of the fibers in those areas while the fibers in oth... | 10/18/2005 |
| 6949315 | Shutdown separators with improved properties A microporous polyolefin battery separator membrane is extremely high in porosity, high in puncture strength, very low in shrinkage and with shutdown temperature of 130–140 degrees C. and melt integrity greater than 165 degrees C. It is made of UHMWPE having a wei... | 09/27/2005 |
| 6933079 | Separator for alkaline storage battery and alkaline storage battery using the same A separator for an alkaline storage battery includes a plurality of polyolefin resins. The polyolefin resins include a first polyolefin resin that is sulfonated, and a second polyolefin resin that is sulfonated. The degree of sulfonation of the first polyolefin resi... | 08/23/2005 |
| 6878484 | Separator for secondary battery and method for producing the same An object of the present invention is to provide a thin battery separator having an excellent nitrate group trapping performance and a high piercing strength. The inventive separator for a secondary battery, which can accomplish such an object, is made of a resin co... | 04/12/2005 |
| 6814865 | Ion exchange membranes, methods and processes for production thereof and uses in specific applications The invention includes novel anion exchange membranes formed by in situ polymerization of at least one monomer, polymer or copolymer on a woven support membrane and their methods of formation. The woven support membrane is preferably a woven PVC membrane. The invent... | 11/09/2004 |
| 6811927 | Battery containing a polycarbodiimide polymer A battery highly inhibited from suffering self-discharge. The battery is characterized by containing a built-in polymer which has in the molecule a carbodiimide unit represented the following formula (I): —[—R—N═C═N—)]n— ... | 11/02/2004 |
| 6790562 | Separator for alkaline secondary battery, method for preparing the same alkaline secondary battery In an alkaline secondary battery provided with a positive electrode, a negative electrode, a separator to be interposed between the positive electrode and the negative electrode, and an alkaline electrolyte solution, the above-mentioned separator has carbon-carbon d... | 09/14/2004 |
| 6777129 | Alkaline storage battery An alkaline storage battery having excellent self-discharge characteristics even after a number of charge-discharge cycles is provided. The alkaline storage battery is provided with a case and an electrode group enclosed in the case, and a separator that is included... | 08/17/2004 |
| 6743551 | Alkaline storage battery The separator 10a for use in the alkaline storage battery of the invention comprises densely and uniformly formed over the entire separator and entrained from the surface to the back plane of the separator, first fine paths (pores) 15 rendered h... | 06/01/2004 |
| 6730404 | Composite active material and process for the production thereof, electrode and process for the production thereof, and non-aqueous electrolyte battery The high rate discharge performance and cyclability are improved. A battery having a hich capacity density and excellent cyclability and safety performance can be produced. A composite active material provided with a polymer on the surface of a carbon-based active m... | 05/04/2004 |
| 6692868 | Melt blown battery separator Battery separators made of a wettable, uniform mat of melt blown fibers. The melt blown fibers are thermally bonded to one another. These fibers are made of a thermoplastic material. The fibers have a diameter in the range of 0.1 to 13 microns (μ) and le... | 02/17/2004 |
| 6680144 | Battery separator A method for producing a battery separator is disclosed. The method comprises applying a coating of an ethylenically unsaturated monomer to the fibers of a non-woven sheet and polymerizing the monomer in situ on the fiber surfaces. The non-woven sheet is ... | 01/20/2004 |
| 6673483 | Sealed storage cell with an improved recombination device An aqueous alkaline electrolyte Ni-MH sealed secondary storage cell includes a bundle of electrodes placed in a container and made up of a plurality of negative and positive electrodes. The space separating the negative electrode from the positive electro... | 01/06/2004 |
| 6670077 | Impregnated separator for electrochemical cell and method of making same A separator for an electrochemical cell and a method of assembling an electrochemical cell are provided. The separator includes a porous paper substrate impregnated and/or coated with a polymer solution that coagulates to prevent electrical shorting while... | 12/30/2003 |
| 6660433 | Lithium secondary battery and battery device comprising same A lithium secondary battery comprises a negative electrode capable of intercalating/deintercalating lithium ion, a positive electrode made of a lithium-containing metal oxide as an active positive material, and a nonaqueous electrolyte, and a polyvinylide... | 12/09/2003 |
| 6617076 | Separator for nonaqueous secondary battery and nonaqueous secondary battery using the same The present invention provides a nonaqueous secondary battery and a separator to be used therein. The separator comprises a polyolefin membrane containing one or more conjugated polyene compounds provided on the surface thereof. The nonaqueous secondary b... | 09/09/2003 |
| 6586138 | Freestanding microporous separator including a gel-forming polymer A freestanding battery separator includes a microporous polymer web with passageways that provide overall fluid permeability. The polymer web preferably contains UHMWPE and a gel-forming polymer material. The structure of or the pattern formed by the gel-... | 07/01/2003 |
| 6579648 | Nonaqueous secondary battery The nonaqueous secondary battery according to the invention uses a separator 10 which is a composite resin film with a reinforcing material layer 11 integrally filled with polyvinylidene fluoride resin 12 or a separator 20 which is a composite resin film ... | 06/17/2003 |
| 6579643 | Separator having a plasticizer coating for use in electrochemical cell devices A separator for use in laminated multi-layer electrochemical cell device structures. The devices comprise positive and negative electrode layer members of polymeric matrix composition having the microporous polyolefin membrane separator member interposed ... | 06/17/2003 |
| 6537696 | Nonwoven separator for a nickel-metal hydride battery The preferred embodiment is to a battery separator for a nickel metal hydride (NiMH) battery. The separator includes a wettable, resilient nonwoven web having two spunbond layers sandwiching a melt blown layer. The web has a puncture strength of greater t... | 03/25/2003 |
| 6537695 | Non-woven fabric treatment Non-woven fabrics are disclosed comprising substantially unbonded fibers and vinyl monomers which are capable of reacting with an acid or a base to form a salt directly or indirectly by a reaction involving exposure to ultraviolet radiation while impregna... | 03/25/2003 |
| 6527955 | Heat-activatable microporous membrane and its uses in batteries A novel microporous membrane comprising a hot-melt adhesive and an engineering plastics, the methods of preparing such microporous membrane and the uses of the microporous membrane in, e.g., batteries, super capacitors, fuel cells, sensors, electrochromic... | 03/04/2003 |
| 6509118 | Valve-regulated lead-acid cells and batteries and separators used in such cells and batteries A valve-regulated lead-acid cell utilizes an absorptive glass mat separator having a glass fiber surface which is modified by treatment with at least one particular polymer, as by treatment with a polymer emulsion to coat at least part of the glass fiber ... | 01/21/2003 |
| 6506522 | Battery separator element containing efficiency improving additives A recombinant battery element of a lead acid battery including a negative plate, a positive plate and a separator having an additive associated with the separator that improves the overall efficiency of the lead acid battery.... | 01/14/2003 |
| 6444367 | Durable hydrophilic nonwoven mat for rechargable alkaline batteries A battery separator material comprising a nonwoven web of a wettable fiber matrix, wherein the wettable fiber matrix are thermoplastic polymeric fibers blended with at least one. hydrophilic melt additive. In alternate embodiments, the nonwoven web furthe... | 09/03/2002 |
| 6387565 | Battery having an adhesive resin layer containing a filler Conventional batteries are disadvantageous in that a firm outer case must be used to maintain an electrical connection between electrodes, which has been an obstacle to size reduction. Those in which each electrode and a separator are joined with an adhes... | 05/14/2002 |
