Patents by Inventor Donald Scott Matthews

Donald Scott Matthews 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).

  • Yoyo protective sleeve
    Patent number: 6123597
    Abstract: A protective sleeve for a yoyo toy is made of resiliently stretchable material. The sleeve is coaxially engaged over the yoyo when not in use. The sleeve, not only protects the yoyo against chips, scratches and other damages, but also keeps its string from unraveling or tangling.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: September 26, 2000
    Inventors: Donald Scott Matthews, William Brian Dunn