Patents by Inventor David J. Maldonado

David J. Maldonado 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).

  • Stretchable, water repellant book cover
    Patent number: 5013068
    Abstract: A protective envelope for a book having front and rear covers, and a binding area, the envelope comprising, a stretchable sheet defining front and rear sections adapted to closely overlie the front and rear book covers, the sheet having edges; a stretchable seam binding extending in a loop and attached to the edges; the front and rear sections having outer and inner sides, and including stretchable flaps extending adjacent the book cover side of the sheet sections, the flaps peripherally attached to the sheet section to form pockets for reception of the book covers into the respective pockets in conformed, retained position therein.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: May 7, 1991
    Inventor: David J. Maldonado
  • Toilet seat lifter
    Patent number: D684837
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: June 25, 2013
    Inventor: David J. Maldonado