Patents by Inventor David A. Katsantones

David A. Katsantones 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).

  • Eyeglass appliance for reducing eye strain
    Patent number: 6547387
    Abstract: An eye strain reducing lens structure for attaching to existing glasses to reduce eye strain when looking at a computer or television screen for extended periods of time. The eye strain reducing lens structure includes a pair of lenses coupled together by a bridge portion and a pair of attachment members each having resilient oppositional arms securable to a temple of an eyeglasses frame.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: April 15, 2003
    Inventor: David A. Katsantones