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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7923154 | Carbon-coated Li-containing powders and process for production thereof The invention provides a new route for the synthesis of carbon-coated powders having the olivine or NASICON structure, which form promising classes of active products for the manufacture of rechargeable lithium batteries. Carbon-coating of the powder particles is ne... | 04/12/2011 |
| 7923153 | Linear ether electrolyte with asymmetric end groups for use in lithium batteries A primary electrochemical cell and electrolyte incorporating a linear asymmetric ether is disclosed. The ether may include EME, used in combination with DIOX and DME, or have the general structural formula R1—O—CH2—CH2—O—R | 04/12/2011 |
| 7914930 | Method for producing non-aqueous electrolyte secondary battery A non-aqueous electrolyte secondary battery having both high capacity and long-life is provided by solving the problem of the large irreversible capacity of a negative electrode active material. The non-aqueous electrolyte secondary battery is produced by a method i... | 03/29/2011 |
| 7910247 | Nonaqueous electrolyte battery A nonaqueous electrolyte battery includes a case, a nonaqueous electrolyte provided in the case, a positive electrode provided in the case, and a negative electrode provided in the case, including a negative electrode active material and an electronic conductor cont... | 03/22/2011 |
| 7879495 | Medical device having lithium-ion battery A medical device includes a rechargeable lithium-ion battery for providing power to the medical device. The lithium-ion battery includes a positive electrode comprising a current collector and a first active material and a negative electrode comprising a current col... | 02/01/2011 |
| 7842420 | Electrode material with enhanced ionic transport properties Materials useful as electrodes for lithium batteries have very good electronic and ionic conductivities. They are fabricated from a starting mixture which includes a metal, a phosphate ion, and an additive which enhances the transport of lithium ions in the resultan... | 11/30/2010 |
| 7838151 | Non-aqueous electrolyte secondary battery A positive electrode active material including lithium (Li), nickel (Ni), manganese (Mn) and a transition metal that can be in the hexavalent state is used. As the transition metal that can be in the hexavalent state, for example, one or both of tungsten (W) and mol... | 11/23/2010 |
| 7829223 | Process for preparing lithium ion cathode material There is provided a process for preparing lithium cobaltate and to lithium-containing cobalt oxides which is used in lithium battery cathodes. Also, there is provided cathodes for lithium batteries. ... | 11/09/2010 |
| 7829224 | Nonaqueous electrolyte battery, battery pack and vehicle A nonaqueous electrolyte battery includes a negative electrode including a current collector and a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li+). The negative electrode has a porous structure. A po... | 11/09/2010 |
| 7816038 | Lithium ion secondary battery and method for producing the same A method for producing a lithium ion secondary battery includes the steps of: forming a positive electrode mixture layer on a positive electrode substrate to obtain a positive electrode; forming a negative electrode mixture layer on a negative electrode substrate to... | 10/19/2010 |
| 7811708 | Lithium-ion secondary battery A lithium-ion battery includes a cathode that includes an active cathode material. The active cathode material includes a cathode mixture that includes a lithium cobaltate and a manganate spinel a manganate spinel represented by an empirical formula of Li(1+x1)... | 10/12/2010 |
| 7811707 | Lithium-ion secondary battery A lithium-ion battery includes a cathode that includes an active cathode material. The active cathode material includes a cathode mixture that includes a lithium cobaltate and a manganate spinel a manganate spinel represented by an empirical formula of Li(1+x1)... | 10/12/2010 |
| 7803485 | Positive electrode for lithium secondary battery, and lithium secondary battery using the same A positive electrode for use in a lithium secondary battery comprises a positive electrode current collector, and a positive electrode film which is carried on the positive electrode current collector and includes a plurality of mixture layers. The positive electrod... | 09/28/2010 |
| 7799461 | Lithium secondary cell with high charge and discharge rate capability A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a hig... | 09/21/2010 |
| 7794881 | Electrode for lithium batteries and rechargeable lithium battery An electrode for a lithium battery having a thin film composed of active material capable of lithium storage and release, e.g., a microcrystalline or amorphous silicon thin film, provided on a current collector, the electrode being characterized in that a constituen... | 09/14/2010 |
| 7776475 | Lithium rechargeable battery and lithium rechargeable battery pack A lithium rechargeable battery includes a positive electrode that intercalates and deintercalates lithium and a negative electrode that intercalates and deintercalates lithium and has a current collector including Cu or a Cu alloy. In addition, the battery includes ... | 08/17/2010 |
| 7776476 | Battery A battery capable of improving cycle characteristics is provided. A spirally wound electrode body in which a cathode and an anode are wound with a separator in between is included. An electrolytic solution in which an electrolyte salt is dissolved in a solvent is im... | 08/17/2010 |
| 7771876 | Anode active material method of manufacturing the same and nonaqueous electrolyte secondary battery using the same An anode active material having a high discharge capacity and a superior capacity retention ratio during a charge-discharge cycle is provided. The anode active material includes an alloy material including an element M capable of being alloyed with Li and at least o... | 08/10/2010 |
| 7771877 | Electrode active material powder with size dependent composition and method to prepare the same The present invention relates to a powderous electrode active material of lithium transition metal oxide LiaMbO2, wherein 0.9 < a < 1.1, 0.9 < b < 1.1 and M is dominantly transition metal chosen from Mn, Co and Nickel, having particles with a distributio... | 08/10/2010 |
| 7767344 | Lithium secondary battery A lithium secondary battery includes a negative electrode, a positive electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode current collector (3b) having an irregular surface and a negative electrode active mate... | 08/03/2010 |
| 7767345 | Lithium-air battery A lithium-air battery includes a lithium negative electrode, a positive electrode including a catalyst containing gold, and a non-aqueous electrolyte interposed between the positive electrode and the lithium negative electrode. The catalyst includes gold supported o... | 08/03/2010 |
| 7754386 | Rechargeable alkaline manganese cell having reduced capacity fade and improved cycle life Rechargeable galvanic cells are disclosed which comprise a manganese dioxide cathode, a zinc anode and a potassium hydroxide electrolyte wherein the cathode includes additive compounds to increase the cycle life and cumulative discharge capacity of the cell. The add... | 07/13/2010 |
| 7732097 | Battery A battery capable of improving cycle characteristics is provided. A cathode contains an oxide containing lithium and manganese such as Li4Mn5O12 as a cathode material. An anode contains a carbon material as and anode material. The we... | 06/08/2010 |
| 7722991 | High performance anode material for lithium-ion battery An anode material with lithium-alloying particles contained within a porous support matrix is provided. The porous support matrix preferably has a porosity of between 5 and 80% afforded by porosity channels and expansion accommodation pores, and is electrically cond... | 05/25/2010 |
| 7718319 | Cation-substituted spinel oxide and oxyfluoride cathodes for lithium ion batteries The present invention includes compositions and methods of making cation-substituted and fluorine-substituted spinel cathode compositions by firing a LiMn2−y−zLiyMzO4 oxide with NH4HF2 at low temp... | 05/18/2010 |
| 7718320 | Cathode material for Li-ion battery applications A family of Li-ion battery cathode materials and methods of synthesizing the materials. The cathode material is a defective crystalline lithium transition metal phosphate of a specific chemical form. The material can be synthesized in air, eliminating the need for a... | 05/18/2010 |
| 7713662 | Lithium-manganese-based composite oxide containing titanium and nickel The invention provides a lithium-manganese-based composite oxide containing Ti and Ni, which is represented by the compositional formula: Li1+x(Mn1−n−mNimTin)1−xO2, wherein 0 | 05/11/2010 |
| 7709149 | Composite precursor for aluminum-containing lithium transition metal oxide and process for preparation of the same The present invention provides a powdery composite precursor, which comprises a core of a lithium transition metal oxide, and an aluminum hydroxide-based precipitate layer coated on the surface of the core, and a process to prepare the composite precursor. The prepa... | 05/04/2010 |
| 7709150 | Method for preparing positive electrode active material for non-aqueous secondary battery There is provided a simple and easy method of preparation of a positive electrode active material for a non-aqueous secondary battery which comprises a compound comprising lithium, nickel and manganese and having a layered structure. Said method comprises firing a m... | 05/04/2010 |
| 7709151 | Non-aqueous electrolyte secondary battery, positive electrode active material and method of manufacturing the same As a positive electrode active material, a lithium transition metal complex oxide having a layered rock-salt structure containing lithium (Li) and containing magnesium atoms (Mg) substituted for part of lithium atoms (Li) is used. The lithium transition metal comple... | 05/04/2010 |
| 7678503 | Surface and bulk modified high capacity layered oxide cathodes with low irreversible capacity loss The present invention includes compositions, surface and bulk modifications, and methods of making of (1−x)Li[Li1/3Mn2/3]O2.xLi[Mn0.5-yNi0.5-yCo2y]O2 cathode materials having an O3 crysta... | 03/16/2010 |
| 7674558 | Alleviation of voltage delay in lithium-liquid depolarizer/electrolyte solvent battery cells Voltage delay in an active metal anode/liquid cathode battery cell can be significantly reduced or completely alleviated by coating the active metal anode (e.g., Li) surface with a thin layer of an inorganic compound with Li-ion conductivity using chemical treatment... | 03/09/2010 |
| 7674556 | Non-aqueous electrolyte secondary battery and method for charging the same A non-aqueous electrolyte secondary battery comprises a negative electrode including a negative electrode active material, a positive electrode including a positive electrode active material, and a non-aqueous electrolyte; the positive electrode active material is L... | 03/09/2010 |
| 7674557 | Electrode active materials for lithium secondary batteries, method for preparing the same, and lithium secondary batteries using the same An electrode active material further comprising an amphoteric compound, an alkali metal sulfide or an alkali metal oxide, and lithium secondary batteries using the electrode active material, are disclosed. The lithium secondary batteries neutralize acids generating ... | 03/09/2010 |
| 7666551 | Positive electrode active material for non-aqueous electrolyte secondary battery, production method thereof, and non-aqueous electrolyte secondary battery using the same A positive electrode active material for a non-aqueous electrolyte secondary battery of this invention includes: a lithium nickel composite oxide containing lithium, nickel, and at least one metal element other than lithium and nickel; and a layer containing lithium... | 02/23/2010 |
| 7662515 | Nonaqueous electrolyte battery, battery pack and vehicle A nonaqueous electrolyte battery includes a negative electrode including a current collector and a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li+). The negative electrode has a porous structure. A po... | 02/16/2010 |
| 7659034 | Lithium secondary battery Charge-discharge cycle performance is improved in a lithium secondary battery including a negative electrode containing a negative electrode active material having silicon as its main component, provided on a surface of a current collector, a positive electrode cont... | 02/09/2010 |
| 7655358 | Positive active material composition for rechargeable lithium battery and method of preparing positive electrode using same A positive active material composition for a rechargeable battery includes a positive active material selected from compounds represented by formulas 1 to 13, and at least one semi-metal, metal or oxides thereof: LixMnA2 (1) ... | 02/02/2010 |
| 7651818 | Lithium ion secondary battery and charging method therefor A lithium ion secondary battery having a positive electrode 3 which contains, as a positive electrode active material, a composite metal oxide containing at least one of Li, Co, Mn, and Ni as a metal component thereof; a negative electrode 2 which cont... | 01/26/2010 |
| 7648800 | Positive electrode active material for a non-aqueous electrode cell and non-aqueous electrode cell using the same The present invention enables to obtain both of a cycle characteristic and a high load characteristic. The present invention discloses a positive electrode active material containing lithium composite manganese oxide having a spinel structure for a non-aqueous elect... | 01/19/2010 |
