Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 4615959 | Secondary battery or cell with improved rechargeability A secondary battery or cell with improved rechargeability is obtained by combination of (A) a cathode active material comprising a chalcogen compound of a transition metal, (B) an electrolyte comprising an organic solvent having dissolved therein a lithiu... | 10/07/1986 |
| 4608279 | Galvanic cells having ion exchange resin in their cathode mix Galvanic cells of the Leclanche and zinc chloride type which employ cathode mixes having relatively high ratios of EMD to conductive material and which include a minor amount of ion exchange resin in their cathode mixes exhibit enhanced light drain servic... | 08/26/1986 |
| 4604336 | Manganese dioxide and process for the production thereof A novel form of manganese dioxide is produced by heat treating lambda-manganese dioxide at a temperature of between about 250° C. and about 400° C. This manganese dioxide possesses an x-ray diffraction pattern indicating peaks at 3.11, 2.41, 2.11, 1.62,... | 08/05/1986 |
| 4560632 | Polyvinyl-coated cathode collector for cells employing liquid cathodes A molded porous cathode collector for use in nonaqueous cells comprising particulate carbonaceous conductive material bonded with a binder such as polytetrafluoroethylene and coated with a vinyl polymer film to improve its mechanical strength and handling... | 12/24/1985 |
| 4555457 | Battery cell containing potassium monoperoxysulfate in the cathode mix A battery cell which comprises an anode element of magnesium alloy metal, a carbon or stainless steel current collector, and a manganese-dioxide-type cathode mix and electrolyte comprising mainly manganese dioxide with the addition of potassium monoperoxy... | 11/26/1985 |
| 4548835 | Method for fabricating electrodes for use in lead storage batteries A method for fabricating an electrode for use in lead storage batteries in which an aqueous emulsion of a silicone capable of forming an elastic, porous matrix on breaking of the emulsion, is contacted with a finely divided active electrode material at th... | 10/22/1985 |
| 4508799 | Cell with NiCl2 cathode A non-aqueous electrochemical cell having an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an electrolyte salt and sulfur dioxide and a cathode comprised of NiCl2.... | 04/02/1985 |
| 4508800 | Cell with FeBr3 cathode A non-aqeous electrochemical cell having an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an electrolyte salt and sulfur dioxide and a cathode comprised of FeBr3.... | 04/02/1985 |
| 4508798 | Cell with CoCl2 cathode A non-aqueous electrochemical cell having an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an electrolyte salt and sulfur dioxide and a cathode comprised of CoCl2.... | 04/02/1985 |
| 4507372 | Positive battery plate The power characteristics of a lead acid battery are improved by incorporating a dispersion of 1 to 10% by weight of a thermodynamically stable conductivity additive, such as conductive tin oxide coated glass fibers (34) of filamentary glass wool (42) in ... | 03/26/1985 |
| 4470939 | Method of electrode formation An electrode for an electrochemical cell is formed by blending an electrochemically active compound with a conductive material, forming the blend into a plurality of agglomerates, admixing the agglomerates with a second conductive material which may be th... | 09/11/1984 |
| 4407915 | Secondary zinc electrode A pressed, secondary zinc electrode has dispersed therein particulate carbon in an amount between 1 and 50% by weight of the total weight of zinc and carbon and an organic binder in an amount between 0.5 and 10% by weight of the total weight of zinc and c... | 10/04/1983 |
| 4401714 | Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell The corrosion rate of low carbon steel within a positive electrode of a high-temperature, secondary electrochemical cell that includes FeS as active material is substantially reduced by incorporating therein finely divided iron powder in stoichiometric ex... | 08/30/1983 |
| 4367208 | Process for the manufacture of battery carbon black A process useful for the production of a carbon black useful as an ingredient in dry cell battery compositions is disclosed which comprises heating a carbon black feedstock having a dibutylphalate absorption (DBP) ranging from 200 to 250 cc/100 g, nitroge... | 01/04/1983 |
| 4366215 | Electrochemical cell A method of making a cathode for a secondary electrochemical cell is disclosed. The method involves activating or preconditioning an oxide which has a spinel-type or oxo-spinel type structure of the formula AB2 O4 with at least one o... | 12/28/1982 |
| 4358390 | Zinc electrode A zinc electrode comprising at least one active portion is improved due to the fact that the active portion has an open porosity of at least 60% and comprises electron-conductive fibers and due to the fact that the active material or materials are distrib... | 11/09/1982 |
| 4351815 | Battery carbon black Carbon black products useful as an ingredient in dry cell battery compositions are disclosed which have a wide aggregate size distribution with a range of measured aggregate volume from about 5×104 to about 1×109 nm3, a ... | 09/28/1982 |
| 4304828 | Zinc electrode A zinc electrode comprised of a zinc active material which includes an additive material selected from the group consisting of zinc fluoride and zinc titanate.... | 12/08/1981 |
| 4297231 | Process for producing a positive electrode for a non-aqueous electrolytic cell Disclosed is a process for producing a positive electrode for a non-aqueous electrolytic cell. Manganese dioxide is heat-treated at a temperature between 250° and 400° C. The heat-treated manganese dioxide is next mixed with a conducting agent and binde... | 10/27/1981 |
| 4271243 | Positive active material for an electrical cell The invention relates to a positive active material for an electric cell. Such an active material is constituted by a vitreous compound which results from the addition of a small quantity of silica to at least one electrochemically reducible metal oxide. ... | 06/02/1981 |
| 4264687 | Fluid depolarized cell A fluid depolarized cell containing an inert cathode with finely divided metal powder dispersed within said cathode. The metal powder such as nickel powder catalyzes the reaction of unstable decomposition products of the fluid depolarizer into more stabl... | 04/28/1981 |
| 4263383 | Zinc electrode A zinc electrode comprising at least one active portion is improved due to the fact that the active portion has an open porosity of at least 60% and comprises electron-conductive fibers and due to the fact that the active material or materials are distrib... | 04/21/1981 |
| 4248945 | Dry cell battery A dry-cell battery construction includes a zinc electrode and a graphite electrode. An external electrolyte of a raw paste material from vegetal origin contacts the zinc electrode. The external electrolyte is preferably raw paste material of the fruit of ... | 02/03/1981 |
| 4245016 | Electrode coating composed of copolymers derived from diacetone acrylamide An improved electrode coating and separator coating derived from a copolymer of diacetone acrylamide and a polymerizable monomer. This invention relates to novel rechargeable electrodes, separators and processes for preparing same.... | 01/13/1981 |
| 4188235 | Electrode binder composition This invention provides a novel asphalt composition suitable for use as a binder for carbon electrodes which consists essentially of a homogeneous blend of three organic materials comprising (1) a highly aromatic hydrocarbon solvent having a specific comb... | 02/12/1980 |
| 4130696 | Conductive diluent for pressed nickel electrodes The conductive diluent is a combination of powdered carbon (preferably graphite) and nickel flakes. It is admixed with the active electrode material and a binder in the pressed nickel electrode so that the diluent is substantially homogeneously mixed with... | 12/19/1978 |
| 4118552 | Self-supporting electrode and method of making same The improved self-supporting electrode of the present invention comprises a uniform mixture of cuprous chloride, preferably in major proportion and silver chloride, preferably in minor proportion. The electrode may also include a minor proportion of coppe... | 10/03/1978 |
| 4076902 | Sodium-sulfur storage battery A sodium-sulfur storage battery having a sealed housing which contains a solid electrolyte incorporating an anodic reactant such as sodium, a cathodic current collector (which may be the housing) extending in a direction generally parallel to the solid el... | 02/28/1978 |
| 4061719 | Process of conductive carbon black for use in depolarization masses in dry batteries Conductive carbon black for use in depolarization masses in dry batteries is produced. To this end, an aqueous suspension of carbon black having an AS-number higher than 15 and having been obtained by subjecting hydrocarbons, which are liquid at room temp... | 12/06/1977 |
| 4042760 | Flat battery A planar primary battery particularly suited for a photographic application characterized in exhibiting high current drain capacities and improved manufacturability. The battery structure incorporates at least one electrode present in aqueous slurry form ... | 08/16/1977 |
| 4035555 | Rechargeable nonaqueous batteries Nonaqueous, rechargeable batteries are described which employ a conventional negative electrode and a positive electrode with a new and unique active material. Such batteries are advantageous because of the high capacity per unit weight and per unit volum... | 07/12/1977 |
