Patents by Inventor Eung Chul Choi

Eung Chul Choi 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).

  • Patent number: 10920364
    Abstract: A novel filter canister configured to dock into a dry-cleaning machine incorporates unique structural elements that reduce or eliminate debris overfill and jamming of the filter canister after an extended dry-cleaning operation. In particular, a novel perforated hollow inner core, a vertical strut-based canister docking frame, a washable and reusable cartridge with a perforated rigid inner surface layer and a particulate filtering element-encapsulating outer surface layer, and a removable lid that secures or frees the washable and reusable cartridge that constitute the novel filter canister enable a dry-cleaning operator to install, clean, and reuse the washable and reusable cartridge conveniently for numerous dry-cleaning cycles while avoiding debris overfill, canister jamming, and frequent filter canister replacement and repurchase needs that are endemic in conventional dry cleaner filter designs that tend to be cumbersome, costly, and environmentally detrimental.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: February 16, 2021
    Inventor: Eung Chul Choi
  • Publication number: 20200208333
    Abstract: A novel filter canister configured to dock into a dry-cleaning machine incorporates unique structural elements that reduce or eliminate debris overfill and jamming of the filter canister after an extended dry-cleaning operation. In particular, a novel perforated hollow inner core, a vertical strut-based canister docking frame, a washable and reusable cartridge with a perforated rigid inner surface layer and a particulate filtering element-encapsulating outer surface layer, and a removable lid that secures or frees the washable and reusable cartridge that constitute the novel filter canister enable a dry-cleaning operator to install, clean, and reuse the washable and reusable cartridge conveniently for numerous dry-cleaning cycles while avoiding debris overfill, canister jamming, and frequent filter canister replacement and repurchase needs that are endemic in conventional dry cleaner filter designs that tend to be cumbersome, costly, and environmentally detrimental.
    Type: Application
    Filed: December 31, 2018
    Publication date: July 2, 2020
    Inventor: Eung Chul Choi
  • Patent number: 10190252
    Abstract: A commercial dry-cleaning solvent filter apparatus is configured to filter and decontaminate a used dry-cleaning solvent in a specialized multi-level filtration container to enable environmentally-friendly reuse of the used dry-cleaning solvent in a commercial dry-cleaning machine after a novel decontamination process. The commercial dry-cleaning solvent filter apparatus incorporates multi-level gravity feed filtration chambers filled with a unique multi-metallic and multi-chemical filtration “clay” agent in multiple stages for comprehensive decontamination of the used dry-cleaning solvent. The filtered and decontaminated used dry-cleaning solvent is reusable and can be pumped back into a dry-cleaning solvent tank internal to the commercial dry-cleaning machine. The reuse of the dry-cleaning solvent reduces the need for frequent solvent replacements.
    Type: Grant
    Filed: May 27, 2017
    Date of Patent: January 29, 2019
    Inventor: Eung Chul Choi
  • Publication number: 20180340293
    Abstract: A commercial dry-cleaning solvent filter apparatus is configured to filter and decontaminate a used dry-cleaning solvent in a specialized multi-level filtration container to enable environmentally-friendly reuse of the used dry-cleaning solvent in a commercial dry-cleaning machine after a novel decontamination process. The commercial dry-cleaning solvent filter apparatus incorporates multi-level gravity feed filtration chambers filled with a unique multi-metallic and multi-chemical filtration “clay” agent in multiple stages for comprehensive decontamination of the used dry-cleaning solvent. The filtered and decontaminated used dry-cleaning solvent is reusable and can be pumped back into a dry-cleaning solvent tank internal to the commercial dry-cleaning machine. The reuse of the dry-cleaning solvent reduces the need for frequent solvent replacements.
    Type: Application
    Filed: May 27, 2017
    Publication date: November 29, 2018
    Inventor: Eung Chul Choi