Patents by Inventor Yong S. Chen

Yong S. Chen 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: 11751730
    Abstract: Improvements in a cleaning brush is disclosed. The cleaning tool has both a larger and smaller cleaning feature a single size cleaning tool to try and cover all uses is obviated. With a larger cleaning head, the larger cleaning head can be optimized for the rim surfaces of a toilet. The inner detailing head retracts into the outer cleaning tool. In the retracted mode the detailing head operates with the larger outer tool and provides a cohesive flat surface for cleaning. A spring can be used to retract the detailing head. The detailing head extends from the center, side or corner of the cleaning tool and extends far enough to allow for full use of the detailing head to effectively reach corners and/or cervices. The handle and or the head can be angled to provide an optimum angle for use.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: September 12, 2023
    Inventor: Yong S. Chen
  • Publication number: 20210076887
    Abstract: Improvements in a cleaning brush is disclosed. The cleaning tool has both a larger and smaller cleaning feature a single size cleaning tool to try and cover all uses is obviated. With a larger cleaning head, the larger cleaning head can be optimized for the rim surfaces of a toilet. The inner detailing head retracts into the outer cleaning tool. In the retracted mode the detailing head operates with the larger outer tool and provides a cohesive flat surface for cleaning. A spring can be used to retract the detailing head. The detailing head extends from the center, side or corner of the cleaning tool and extends far enough to allow for full use of the detailing head to effectively reach corners and/or cervices. The handle and or the head can be angled to provide an optimum angle for use.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 18, 2021
    Inventor: Yong S. Chen
  • Publication number: 20030089791
    Abstract: A visual indicator microporous membrane that provides controlled-release of active ingredients, and prevents formulation leakage for use such as with an insecticidal or fragrance emanator device. During use, the semiporous membrane visually indicates transmission of active ingredient vapor to the consumer. These micropores that are normally opaque become saturated and turn from opaque to clear when in use, and when additional volatile material remains. Upon depletion of the volatile material from the reservoir and subsequently from the membrane, the membrane turns opaque again. In a preferred embodiment, the container comprises a protective shield at least partially covering the porous membrane.
    Type: Application
    Filed: November 14, 2001
    Publication date: May 15, 2003
    Inventors: Yong S. Chen, Casper W. Chiang
  • Publication number: 20020192123
    Abstract: A heat-regulating container for use with a heating system, the container having integral leg support structure to provide temperature step-down between the heating apparatus and the container, the leg supports in the form of a plurality of individual dimples or bumps, in order to achieve desirable temperature for the controlled release of active ingredients such as pesticides, disinfectants and fragrances contained in the reservoir of the container, the system being used for the efficient conditioning of an atmosphere, such as an office, workplace, industrial or household room.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 19, 2002
    Inventor: Yong S. Chen