Patents by Inventor Yong Hwan Roh

Yong Hwan Roh 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: 10196804
    Abstract: A solution supply comprises a container having a space and a channel socket in the space to allow the solution to flow out of the container, the container floated by buoyance in a water tank and a feeder opening or closing the channel socket by buoyance and gravity in the water tank, wherein the feeder includes a dispenser having an upper portion and a lower portion, and wherein the upper portion of the dispenser includes a coupling body having an upper portion assembled with the channel socket along the same axis as the channel socket and moved by the buoyance of the container, and the lower portion of the dispenser includes a weight center base supporting the coupling body and a shutter stem coupled with an upper portion of the weight center base and having a stem seal for opening and closing to the channel socket.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: February 5, 2019
    Assignee: UNICO Co., Ltd.
    Inventors: Yong Hwan Roh, Seung Hyun Roh, Seo Hyun Roh
  • Publication number: 20180155911
    Abstract: A solution supply comprises a container having a space and a channel socket in the space to allow the solution to flow out of the container, the container floated by buoyance in a water tank and a feeder opening or closing the channel socket by buoyance and gravity in the water tank, wherein the feeder includes a dispenser having an upper portion and a lower portion, and wherein the upper portion of the dispenser includes a coupling body having an upper portion assembled with the channel socket along the same axis as the channel socket and moved by the buoyance of the container, and the lower portion of the dispenser includes a weight center base supporting the coupling body and a shutter stem coupled with an upper portion of the weight center base and having a stem seal for opening and closing to the channel socket.
    Type: Application
    Filed: May 24, 2017
    Publication date: June 7, 2018
    Inventors: Yong Hwan Roh, Seung Hyun Roh, Seo Hyun Roh
  • Patent number: D872832
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: January 14, 2020
    Assignee: UNICO CO., LTD.
    Inventors: Yong Hwan Roh, Seung Hyun Roh, Seo Hyun Roh