Patents by Inventor Min Ah CHA

Min Ah CHA 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).

  • APPARATUS AND METHOD FOR PROCESSING SUBSTRATE
    Publication number: 20240153792
    Abstract: An apparatus and method for processing a substrate can reduce the concentration of process by-products in a chemical solution.
    Type: Application
    Filed: November 7, 2023
    Publication date: May 9, 2024
    Applicants: SEMES CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min Jung KIM, Jin Ah HAN, Hee Hwan KIM, Yong Hoon HONG, Kyoung Suk KIM, Jong Hyeok PARK, Jin Hyung PARK, Dae Hyuk CHUNG, Ji Hoon CHA
  • Cathode active material for lithium-ion secondary battery, manufacturing method therefor and lithium-ion secondary battery comprising same
    Patent number: 10347933
    Abstract: A cathode active material for a lithium secondary battery includes lithium transition metal oxide particles, wherein the lithium transition metal oxide particles may include first lithium transition metal oxide particles (first particles) including an interparticular pore and second lithium transition metal oxide particles (second particles) having an average particle diameter within a range of a diameter of the interparticular pore, measured by mercury intrusion porosimetry. By including first particles including an interparticular pore and second particles having an average particle diameter within a range of a diameter of the interparticular pore measured by mercury intrusion porosimetry, the cathode active material may have a reduced interparticular pore present therein. Accordingly, the cathode active material may have an improved pellet density. Consequently, when a lithium secondary battery is manufactured using the cathode active material, the energy density thereof may improve.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: July 9, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jang Suk Hyun, Jin Young Kim, Ki Tae Kim, Pil Sang Yun, Min Ah Cha, Sang Mi Kim, Hyun Beom Kim
  • PRECURSOR OF CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD OF PREPARING SAME, CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD OF PREPARING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAID CATHODE ACTIVE MATERIAL
    Publication number: 20180145319
    Abstract: Provided are a precursor of cathode active material for lithium secondary batteries represented by the following formula, a method of preparing the same, a cathode active material for lithium secondary batteries, a method of preparing the same, and a lithium secondary battery comprising the cathode active material: NiyM1?y?kM?k(OH)2??Formula 1 wherein, M is at least one element selected from the group consisting of cobalt (Co) and manganese (Mn), M? is at least one element selected from the group consisting of magnesium (Mg), aluminum (Al), calcium (Ca), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), copper (Cu), zinc (Zn), gallium (Ga), strontium (Sr), yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), and fluorine (F), 0.8?y<1, and 0.01<k<0.1.
    Type: Application
    Filed: August 21, 2015
    Publication date: May 24, 2018
    Inventors: Ki Tae KIM, Min Ah CHA, Jang Suk HYUN
  • CATHODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR AND LITHIUM-ION SECONDARY BATTERY COMPRISING SAME
    Publication number: 20180006325
    Abstract: A cathode active material for a lithium secondary battery includes lithium transition metal oxide particles, wherein the lithium transition metal oxide particles may include first lithium transition metal oxide particles (first particles) including an interparticular pore and second lithium transition metal oxide particles (second particles) having an average particle diameter within a range of a diameter of the interparticular pore, measured by mercury intrusion porosimetry. By including first particles including an interparticular pore and second particles having an average particle diameter within a range of a diameter of the interparticular pore measured by mercury intrusion porosimetry, the cathode active material may have a reduced interparticular pore present therein. Accordingly, the cathode active material may have an improved pellet density. Consequently, when a lithium secondary battery is manufactured using the cathode active material, the energy density thereof may improve.
    Type: Application
    Filed: August 21, 2015
    Publication date: January 4, 2018
    Inventors: Jang Suk HYUN, Jin Young KIM, Ki Tae KIM, Pil Sang YUN, Min Ah CHA, Sang Mi KIM, Hyun Beom KIM