Patents by Inventor Frank P. Diaz

Frank P. Diaz 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: 6539647
    Abstract: An improved safety shoe for protecting a person's foot from harmful injury including a high impact resistant outer shell, an inner dense foam insert, a solid toe cap, a heel cup, an inner sole, an outer sole and a moisture dissipating material surrounding the dense foam insert. The outer shell includes a series of flexible interlocking sliding bands arranged surrounding the foot and folding under the foot between the outer sole and the inner sole. Entrance to the boot is by means of a rear opening having a flush mounted buckle for closing the boot around the foot.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: April 1, 2003
    Inventor: Frank P. Diaz
  • Publication number: 20020129517
    Abstract: An improved safety shoe for protecting a person's foot from harmful injury comprising a high impact resistant outer shell, an inner dense foam insert, a solid toe cap, a heel cup, an inner sole, an outer sole and a moisture dissipating material surrounding the dense foam insert. The outer shell comprises a series of flexible interlocking sliding bands arranged surrounding the foot and folding under the foot between the outer sole and the inner sole. Entrance to the boot is by means of a rear opening having a flush mounted buckle for closing the boot around the foot.
    Type: Application
    Filed: March 13, 2001
    Publication date: September 19, 2002
    Inventor: Frank P. Diaz