Patents by Inventor Kai Wai Choy

Kai Wai Choy 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: 10309085
    Abstract: A hair and detritus catching device with one or multiple offset layers of prongs that can be positioned in any drain pipes and can be easily removed for cleaning or replacement. It is out of sight for normal usage and allows water to flow through easily while preventing hair and detritus from clogging up the drain pipe. It can be attached to a stopper or other connection mechanisms suitable for the type of drain, in order to allow for normal opening and closing operation of the drain.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: June 4, 2019
    Inventor: Kai Wai Choy