Patents by Inventor Suk Woo Park

Suk Woo Park 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 recovering valuable metal from waste electrode material of lithium secondary battery by using lithium carbonate
    Patent number: 11987861
    Abstract: A method according to an embodiment is for recovering a valuable metal from a waste electrode material of a lithium secondary battery by using lithium carbonate. An anode-cathode mixed electrode material that has been separated by draining, crushing, screening, and sorting a waste lithium secondary battery is preprocessed. A precipitation operation performed by adding lithium carbonate (Li2CO3) to a metal melt acquired by performing sulfuric acid dissolution using sulfuric acid. A valuable metal such as nickel, cobalt, manganese, aluminum, and copper is recovered as a residue in the form of a carbonate composite, and a lithium sulfate (Li2SO4) aqueous solution including lithium is recovered as a filtrate.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: May 21, 2024
    Assignee: ECOPRO INNOVATION CO., LTD.
    Inventors: Suk Joon Park, Myung Gyu Lee, Jeong Sik Hong, So Yeong Byun, Gwang Seok Lee, Jong Sun Park, Beom Seok Seo, Min Woo Lee, Da Mo A Kim, Hui Sang Kim, A Ram Park
  • Safety container with safety locking part
    Patent number: 8636160
    Abstract: An openable and closable safety container for a hazardous material is provided. The safety container comprises a container part, a lid part coupled to the container part, and a safety locking part installed in the lid part such that the lid part is opened or closed upward after being turned. The lid part is turned horizontally to unlock the locked state and pushed upward to open the lid part. Therefore, the safety container is very safe.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: January 28, 2014
    Inventor: Suk Woo Park
  • OPENABLE AND CLOSABLE SAFETY CONTAINER FOR HAZARDOUS MATERIALS
    Publication number: 20090145873
    Abstract: An openable and closable safety container for a hazardous material is provided. The safety container comprises a container part, a lid part coupled to the container part, and a safety locking part installed in the lid part such that the lid part is opened or closed upward after being turned. The lid part is turned horizontally to unlock the locked state and pushed upward to open the lid part. Therefore, the safety container is very safe.
    Type: Application
    Filed: May 31, 2007
    Publication date: June 11, 2009
    Inventor: Suk Woo Park