Patents Assigned to Seimi Chemical Co., Ltd.
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Patent number: 7785742Abstract: Coagulated particles of nickel-cobalt-manganese hydroxide wherein primary particles are coagulated to form secondary particles are synthesized by allowing an aqueous solution of a nickel-cobalt-manganese salt, an aqueous solution of an alkali-metal hydroxide, and an ammonium-ion donor to react under specific conditions; and a lithium-nickel-cobalt-manganese-containing composite oxide represented by a general formula, LipNixMn1-x-yCoyO2-qFq (where 0.98?p?1.07, 0.3?x?0.5, 0.1?y?0.38, and 0?q?0.05), which is a positive electrode active material for a lithium secondary cell having a wide usable voltage range, a charge-discharge cycle durability, a high capacity and high safety, is obtained by dry-blending coagulated particles of nickel-cobalt-manganese composite oxyhydroxide formed by making an oxidant to act on the coagulated particles with a lithium salt, and firing the mixture in an oxygen-containing atmosphere.Type: GrantFiled: April 22, 2008Date of Patent: August 31, 2010Assignee: Seimi Chemical Co., Ltd.Inventors: Manabu Suhara, Takuya Mihara, Koichiro Ueda, Yukimitsu Wakasugi
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Publication number: 20100196761Abstract: To provide a transition metal compound granule serving as a raw material for a cathode active material for a lithium secondary battery, which has high packing density, large volume capacity density and high safety and which is excellent in durability for charge and discharge cycles. A transition metal compound granule serving as a raw material for a positive electrode material for a lithium ion secondary battery, which comprises particles containing at least one element selected from the group consisting of nickel, cobalt and manganese and having an average particle size of the primary particles being at most 1 ?m and which is substantially spherical and has an average particle size D50 of from 10 to 40 ?m and an average pore size of at most 1 ?m.Type: ApplicationFiled: March 31, 2010Publication date: August 5, 2010Applicant: AGC Seimi Chemical Co., Ltd.Inventors: Koji Tatsumi, Yuki Nagura, Kazuya Hiratsuka
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Publication number: 20100173199Abstract: To provide a surface modified lithium-containing composite oxide for a cathode active material for a lithium ion secondary cell, which is excellent in volume capacity density, safety, durability for charge and discharge cycles and an excellent rate property, and its production process. Particles of a lithium-containing composite oxide represented by the formula: LipNxMyOzFa, wherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than N, 0.9?p?1.3, 0.9?x?2.0, 0?y?0.1, 1.9?z?4.2, and 0?a?0.05, are impregnated with a solution containing a lanthanoid source and a titanium source, followed by heat treatment at from 550 to 1,000° C.Type: ApplicationFiled: January 7, 2010Publication date: July 8, 2010Applicant: AGC Seimi Chemical Co., Ltd.Inventors: Remi Hiraki, Takeshi Kawasato
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Patent number: 7749482Abstract: To provide a process for producing a lithium-containing composite oxide for a positive electrode for a lithium secondary battery, which is excellent in the volume capacity density, safety, charge and discharge cycle durability and low temperature characteristics. A process for producing a lithium-containing composite oxide represented by the formula LipNxMmOzFa (wherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, alkaline earth metal elements and transition metal elements other than N, 0.9?p?1.2, 0.97?x<1.00, 0<m?0.03, 1.9?z?2.2, x+m=1 and 0?a?0.Type: GrantFiled: July 9, 2007Date of Patent: July 6, 2010Assignee: AGC Seimi Chemical Co., Ltd.Inventors: Kazushige Horichi, Etsuya Kawata
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Patent number: 7709148Abstract: To provide a process for producing a lithium-containing composite oxide for a positive electrode of a lithium secondary battery, which has a large volume capacity density, high safety, excellent durability for charge and discharge cycles and excellent low temperature characteristics.Type: GrantFiled: December 7, 2007Date of Patent: May 4, 2010Assignee: AGC Seimi Chemical Co., Ltd.Inventors: Takeshi Kawasato, Tokumitsu Kato, Naoshi Saito, Koji Tatsumi, Megumi Uchida, Remi Hiraki
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Patent number: 7695345Abstract: To provide a technique employed when a plane to be polished of a silicon dioxide type material layer is polished in production of a semiconductor integrated circuit device, which is capable of polishing protruded portions by priority while suppressing polishing at recessed portions and planarizing the plane to be polished at a high level with an extremely small polishing amount, with small pattern dependence of the polishing rate. In production of a semiconductor integrated circuit device, when a plane to be polished is a plane to be polished of a silicon dioxide type material layer, a polishing compound containing cerium oxide particles, a water-soluble polyamine and water is used as a polishing compound for chemical mechanical polishing to polish the plane to be polished.Type: GrantFiled: September 28, 2007Date of Patent: April 13, 2010Assignees: Asahi Glass Company, Limited, AGC Seimi Chemical Co., Ltd.Inventors: Iori Yoshida, Yoshinori Kon
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Publication number: 20100055909Abstract: A semiconductor polishing compound comprising cerium oxide abrasive grains, water and an additive, wherein the additive is a water-soluble organic polymer such as ammonium polyacrylate or an anionic surfactant, the pH at 25° C. is from 3.5 to 6, and the concentration of the additive is from 0.01 to 0.5% based on the total mass of the polishing compound. This polishing compound simultaneously has dispersion stability, excellent scratch characteristics and excellent polishing planarization characteristics. In particular, this polishing compound provides excellent planarization characteristics having dishing fluctuation reduced, when used for polishing a semiconductor substrate having a silicon nitride film 3 and a silicon oxide film 2 formed on a silicon substrate 1. Further, the time for polishing a pattern wafer can be shortened by using this polishing compound.Type: ApplicationFiled: November 13, 2009Publication date: March 4, 2010Applicants: ASAHI GLASS COMPANY LIMITED, Seimi Chemical Co., Ltd.Inventors: Yoshinori Kon, Norihito Nakazawa, Chie Ishida
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Publication number: 20100009540Abstract: A polishing compound for chemical mechanical polishing of a substrate, which comprises (A) abrasive grains, (B) an aqueous medium, (C) tartaric acid, (D) trishydroxymethylaminomethane and (E) at least one member selected from the group consisting of malonic acid and maleic acid, and more preferably, which further contains a compound having a function to form a protective film on the wiring metal surface to prevent dishing at the wiring metal portion, such as benzotriazole. By use of this polishing compound, the copper wirings on the surface of a semiconductor integrated circuit board can be polished at a high removal rate while suppressing formation of scars as defects in a polishing step.Type: ApplicationFiled: September 22, 2009Publication date: January 14, 2010Applicants: ASAHI GLASS COMPANY LIMITED, Seimi Chemical Co., Ltd.Inventors: Hiroyuki KAMIYA, Katsuyuki Tsugita
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Patent number: 7615315Abstract: A positive electrode material for a lithium secondary battery for high voltage high capacity use exhibiting high cycle durability and high safety. The positive electrode material is composed of particles having a composition represented by the general formula: LiaCobMgcAdOeFf (A is the group 6 transition element or the group 14 element, 0.90?a?1.10, 0.97?b?1.00, 0.0001?c?0.03, 0.0001?d?0.03, 1.98?e?2.02, 0?f?0.02 and 0.0001?c+d?0.03), and magnesium, the element A and fluorine exist uniformly in the vicinity of the surfaces of the particles.Type: GrantFiled: August 16, 2004Date of Patent: November 10, 2009Assignee: Seimi Chemical Co., Ltd.Inventors: Koji Tatsumi, Toshiaki Abe, Naoshi Saito, Manabu Suhara
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Publication number: 20090258296Abstract: To provide a lithium/nickel/cobalt/manganese-containing composite oxide powder which has a high weight capacity density, a high packing property, an excellent cycle property, an excellent discharge rate property and an excellent safety, and which has little content of free alkalis and is free from gelation at a time of producing a slurry. A lithium/nickel/cobalt/manganese-containing composite oxide powder represented by the formula LipNixCoyMnzMqO2-aFa (wherein M is at least one element selected from the group consisting of Al, Ge, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9?p?1.1, 0.2?x?0.5, 0.2?y?0.5, 0.1?z?0.4, 0?q?0.05, 1.9?2-a?2.1, p+x+y+z+q=2, and 0?a?0.Type: ApplicationFiled: June 18, 2009Publication date: October 15, 2009Applicant: AGC Seimi Chemical Co., Ltd.Inventors: Takeshi Kawasato, Takuya Mihara, Koichiro Ueda, Yukimitsu Wakasugi, Nozomi Honda
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Publication number: 20090148772Abstract: The present invention provides a lithium-containing composite oxide for a positive electrode for a lithium secondary battery, which has a large volume capacity density and high safety, and excellent durability for charge and discharge cycles and charge and discharge rate property, and its production method. The lithium-containing composite oxide is represented by the general formula LipNxMyOzFa (where N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9?p?1.2, 0.965?x<2.00, 0<y?0.035, 1.9?z?4.2, and 0?a?0.Type: ApplicationFiled: February 10, 2009Publication date: June 11, 2009Applicant: AGC Seimi Chemical Co., Ltd.Inventors: Takeshi KAWASATO, Kazushige Horichi, Megumi Uchida, Takuya Mihara, Naoshi Saito
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Publication number: 20090140199Abstract: To provide a polishing compound which can satisfy both high removal rate of an object to be polished and excellent property to eliminate the difference in level, and to provide a polishing method which can polish a wiring metal fast while suppressing increase of a wiring metal resistance and is excellent in the property to eliminate the difference in level. A polishing compound which comprises abrasive particles, an oxidizing agent, ammonium ions, polyvalent carboxylate ions, at least one chelating agent selected from the group consisting of pentaethylenehexamine, triethylenetetramine and tetraethylenepentamine, and an aqueous medium. Further, a polishing method of polishing a wiring metal 3 by using the polishing compound, after providing a wiring trench 2 on a resin substrate 1 and embedding the wiring metal 3 in the wiring trench 2.Type: ApplicationFiled: November 25, 2008Publication date: June 4, 2009Applicants: Asahi Glass Company, Limited, AGC Seimi Chemical Co., Ltd.Inventors: Hiroyuki KAMIYA, Katsuyuki TSUGITA
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Patent number: 7504180Abstract: There is obtained a material of a positive electrode for a secondary lithium-ion cell having high cycle durability and high safety in high-voltage and high-capacity applications, which is a particulate positive electrode active material for a secondary lithium-ion cell represented by a general formula, LiaCObAcBdOeFf (A is Al or Mg, B is a group-IV transition element, 0.90?a?1.10, 0.97?b?1.00, 0.0001?c?0.03, 0.0001?d?0.03, 1.98?e?2.02, 0?f?0.02, and 0.0001?c+d?0.03), where element A, element B and fluorine are evenly present in the vicinity of the particle surfaces.Type: GrantFiled: June 6, 2003Date of Patent: March 17, 2009Assignee: Seimi Chemical Co., Ltd.Inventors: Koji Tatsumi, Manabu Suhara, Naoshi Saito, Kazushige Horichi, Yukio Jitsugiri
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Patent number: 7501209Abstract: The present invention provides a positive electrode, which has a large volume capacity density, high safety, and is excellent in the coating uniformity, the charge and discharge cyclic durability and the low-temperature properties. Further, the present invention provides a process for producing a lithium-cobalt composite oxide for a positive electrode for a lithium secondary cell, the lithium-cobalt composite oxide being represented by the formula LipCoxMyOzFa (wherein M is a transition metal element other than Co, aluminum or an alkaline earth metal element, 0.9?p?1.1, 0.980?x?1.000, 0?y?0.02, 1.9?z?2.1, x+y=1 and 0?a?0.02).Type: GrantFiled: May 21, 2004Date of Patent: March 10, 2009Assignee: Seimi Chemical Co., Ltd.Inventors: Manabu Suhara, Naoshi Saito, Kazushige Horichi, Megumi Uchida
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Publication number: 20090025781Abstract: It is intended to provide novel amino group-containing heterocyclic derivatives, which have a broad absorption zone in the visible region and are suitable for sensitizing dyes for photoelectric conversion having a high photoelectric conversion efficiency, and photoelectric conversion materials, photoelectric conversion electrodes and photoelectric conversion cells using the same.Type: ApplicationFiled: April 28, 2006Publication date: January 29, 2009Applicant: AGC Seimi Chemical Co., Ltd.Inventors: Katsumi Iida, Etsuya Kawata, Shoji Watanabe, Kana Kobayashi
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Patent number: 7481991Abstract: A process to produce a positive electrode active material for a lithium secondary battery, having a large volume capacity density and high safety, uniform coating properties, charge and discharge cyclic durability and low temperature characteristics even at a high charge voltage is disclosed. The positive electrode active material is a lithium-containing composite oxide represented by the formula LipNxMyOzFa, wherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Sn, Zn, Al, alkaline earth metal elements, and transition metal elements other than the N element, O.9?p?l.1, 0.97?x?l.00, 0?y?0.03, 1.9?z?2.1, x+y=1 and 0?a?0.02. The N element source powder having an average particle size of from 2 to 20 ?m, is impregnated with the M element salt aqueous solution, and the prepared dry powder comprising the N element, M element, a lithium source and optionally a fluorine source is fired at from 700 to 1 ,050° C.Type: GrantFiled: March 2, 2006Date of Patent: January 27, 2009Assignee: Seimi Chemical Co., Ltd.Inventors: Takeshi Kawasato, Megumi Uchida, Naoshi Saito, Manabu Suhara
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POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR LITHIUM SECONDARY BATTERY AND PROCESS FOR PRODUCING THE SAME
Publication number: 20090017383Abstract: A positive electrode active material for a lithium secondary battery containing a lithium-cobalt composite oxide, which has a large volume capacity density, has a high safety and is excellent in charge and discharge cyclic durability, and its production process, are provided. A lithium-cobalt composite oxide represented by the formula LipCoxMyOzFa (wherein M is a transition metal element other than Co or an alkaline earth metal element, 0.9?p?1.1, 0.980?x?1.000, 0?y?0.02, 1.9?z?2.1, x+y=1 and 0?a?0.Type: ApplicationFiled: July 18, 2008Publication date: January 15, 2009Applicant: Seimi Chemical Co., Ltd.Inventors: Manabu SUHARA, Naoshi SAITOH, Kazushige HORICHI, Megumi UCHIDA -
Publication number: 20080272088Abstract: To provide a polishing compound that is capable of minimizing formation of scratches on an object to be polished, such as a resin substrate or a metal wiring, and polishing at a high removal rate. To further provide a polishing method that is capable of minimizing formation of scratches on a resin substrate or a metal wiring, and improving the throughput. The polishing compound T comprises an oxidizing agent, an electrolyte and an aqueous medium, wherein ions formed from the electrolyte comprise ammonium ions, at least one type of organic carboxylate ions selected from the group consisting of polycarboxylate ions and hydroxycarboxylate ions, and at least one type of ions selected from the group consisting of carbonate ions, hydrogencarbonate ions, sulfate ions and acetate ions.Type: ApplicationFiled: February 4, 2008Publication date: November 6, 2008Applicants: ASAHI GLASS CO., LTD., AGC Seimi Chemical Co., Ltd.Inventors: Hiroyuki KAMIYA, Katsuyuki Tsugita
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Publication number: 20080248391Abstract: Provided are a cathode active material with high safety, with high discharge capacity even at high operating voltage, and with excellent cyclic charge and discharge properties, its production method and a non-aqueous electrolyte secondary battery containing the cathode active material. The cathode active material for a non-aqueous electrolyte secondary battery comprises a surface-modified lithium-containing composite oxide particle, wherein the particle is a lithium-containing composite oxide particle represented by the general formula LipNxO2 (wherein N?NiyM1-y-zLz, M contains at least one element selected from Co and Mn, L is an element selected from alkaline earth metal elements, aluminum and transition metal elements other than Ni, Co and Mn, 0.9?p?1.1, 0.9?x<1.1, 0.2?y?0.9, and 0?z?0.3), and a surface layer of the particle contains aluminum, said surface layer within 5 nm having an aluminum content of at least 0.8 as an atomic ratio to a total of Ni and the element M.Type: ApplicationFiled: April 10, 2008Publication date: October 9, 2008Applicant: AGC Seimi Chemical Co., Ltd.Inventors: Yukimitsu WAKASUGI, Takeshi Kawasato, Yukiko Amagasaki, Nozomi Honda
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Publication number: 20080241053Abstract: Coagulated particles of nickel-cobalt-manganese hydroxide wherein primary particles are coagulated to form secondary particles are synthesized by allowing an aqueous solution of a nickel-cobalt-manganese salt, an aqueous solution of an alkali-metal hydroxide, and an ammonium-ion donor to react under specific conditions; and a lithium-nickel-cobalt-manganese-containing composite oxide represented by a general formula, LipNixMn1-x-yCoyO2-qFq (where 0.98?p?1.07, 0.3?x?0.5, 0.1?y?0.38, and 0?q?0.05), which is a positive electrode active material for a lithium secondary cell having a wide usable voltage range, a charge-discharge cycle durability, a high capacity and high safety, is obtained by dry-blending coagulated particles of nickel-cobalt-manganese composite oxyhydroxide formed by making an oxidant to act on the coagulated particles with a lithium salt, and firing the mixture in an oxygen-containing atmosphere.Type: ApplicationFiled: April 22, 2008Publication date: October 2, 2008Applicant: SEIMI CHEMICAL CO., LTD.Inventors: Manabu Suhara, Takuya Mihara, Koichiro Ueda, Yukimitsu Wakasugi