Patents by Inventor Hae In Cho

Hae In Cho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for preparing positive active material for lithium ion secondary battery, positive active material prepared thereby, and lithium ion secondary battery including the same
    Patent number: 9325006
    Abstract: A method for preparing a positive active material for a lithium ion secondary battery, the method including obtaining a mixture by mixing a lithium containing compound and metal oxide, distributing powder of a lithium containing compound into a furnace, and heat treating the mixture in the furnace, wherein a thermal decomposition temperature of the lithium containing compound power distributed into the furnace is lower than that of the lithium containing compound mixed with the metal oxide.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: April 26, 2016
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Yun Ju Cho, Pil Sang Yun, Mi Sun Lee, Hae In Cho
  • Method for preparing lithium manganese oxide positive active material for lithium ion secondary battery, positive active material prepared thereby, and lithium ion secondary battery including the same
    Patent number: 8715858
    Abstract: A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 6, 2014
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Sung Nim Jo, Mi Sun Lee, Hae In Cho
  • POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY INCLUDING POSITIVE ELECTRODE
    Publication number: 20130252104
    Abstract: Provided is a positive electrode for a lithium ion secondary battery sequentially including a positive electrode collector, a positive electrode active material layer able to insert/extract lithium ions, and a lithium ion conductive layer.
    Type: Application
    Filed: December 28, 2012
    Publication date: September 26, 2013
    Applicant: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Sung Nim JO, Hae In CHO, Se Won KIM, Shin Jung CHOI
  • POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY INCLUDING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20130252107
    Abstract: Provided is a positive electrode active material for a lithium ion secondary battery including layer-structured lithium metal oxide expressed by the following Chemical Formula 1 and at least one selected from the group consisting of spinel-structured lithium metal oxides and olivine-structured lithium metal oxides. xLiMO2ยท(1?x)Li2MnO3??(1) (where M is one or more selected from the group consisting of nickel (Ni), cobalt (Co), and manganese (Mn), and 0<x<1.
    Type: Application
    Filed: January 3, 2013
    Publication date: September 26, 2013
    Applicant: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Mi Sun Lee, Se Won Kim, Pil Sang Yun, Doo Kyun Lee, Ha Yeon Lee, Sung Nim Jo, Yun Ju Cho, Hae In Cho, Shin Jung Choi
  • POSITIVE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY USING THE SAME
    Publication number: 20130244111
    Abstract: Provided are a positive active material including a spinel lithium manganese oxide surface-coated with one or more types of nanoparticles selected from olivine-type lithium metal phosphate and metal oxide, a method of preparing the same and a lithium secondary battery using the same. The positive active material provides a lithium secondary battery having improved high-temperature cycle life characteristic and capacity per weight.
    Type: Application
    Filed: January 11, 2013
    Publication date: September 19, 2013
    Applicant: SAMSUNG CORNING PRECISION MATERIALS CO., LTD.
    Inventors: Hae In CHO, Jae Ha Shim, Hyung Cheoul Shim, Dong Myung Yoon, Sung Nim Jo
  • METHOD FOR PREPARING LITHIUM MANGANESE OXIDE POSITIVE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ACTIVE MATERIAL PREPARED THEREBY, AND LITHIUM ION SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20120288767
    Abstract: A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.
    Type: Application
    Filed: April 12, 2012
    Publication date: November 15, 2012
    Inventors: Sung Nim JO, Mi Sun Lee, Hae In Cho
  • METHOD FOR PREPARING POSITIVE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ACTIVE MATERIAL PREPARED THEREBY, AND LITHIUM ION SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20120282528
    Abstract: A method for preparing a positive active material for a lithium ion secondary battery, the method including obtaining a mixture by mixing a lithium containing compound and metal oxide, distributing powder of a lithium containing compound into a furnace, and heat treating the mixture in the furnace, wherein a thermal decomposition temperature of the lithium containing compound power distributed into the furnace is lower than that of the lithium containing compound mixed with the metal oxide.
    Type: Application
    Filed: April 17, 2012
    Publication date: November 8, 2012
    Inventors: Yun Ju CHO, Pil Sang Yun, Mi Sun Lee, Hae In Cho