Patents by Inventor Chang-Jong Park

Chang-Jong 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).

  • BRANCHED-CHAIN AMINO ACID CRYSTALLIZATION METHOD CAPABLE OF SUSTAINABLY CYCLING AMMONIA
    Publication number: 20240132442
    Abstract: The present disclosure relates to a crystallization method of branched-chain amino acids capable of sustainably cycling ammonia, and branched-chain amino acid crystal produced by the method.
    Type: Application
    Filed: November 9, 2020
    Publication date: April 25, 2024
    Inventors: Jun Woo KIM, Shin Ae PARK, Ji Hyun SHIN, Jae Hun YU, Chang Yub OH, Min Jong KIM
  • RELEASABLE STEP LOCKING SYSTEM
    Publication number: 20120085618
    Abstract: A passenger conveyor includes a releasable step locking system having a clamp, a lock, and an actuator. The clamp couples a step to a propulsion mechanism, the lock secures the coupling between the step and the propulsion mechanism, and the actuator changes the state of the lock so that the propulsion mechanism can be either engaged or disengaged from the step.
    Type: Application
    Filed: July 20, 2009
    Publication date: April 12, 2012
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Albrecht Duerrer, Chang-Jong Park