Patents by Inventor Thanh D. Quach

Thanh D. Quach 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).

  • Retainer and method of making
    Patent number: 5083919
    Abstract: A Hawley-type retainer is formed with a reinforcing design carrier laminated within a colored plastic retainer body and partially surrounded by a clear or colored plastic mound, which is laminated within the colored plastic body. The clear or colored and highly visible design on the carrier adds interest and identification to the retainer, promoting its use and location and preventing loss or accidental destruction. The invention is attractive to children so they wear the retainer often.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: January 28, 1992
    Inventor: Thanh D. Quach