Patents by Inventor Dennis Piper

Dennis Piper 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).

  • Retention system for headgear
    Publication number: 20050204456
    Abstract: Protective headguard comprising a protective pad and a retention element cooperatively attached to the protective pad wherein the headguard defines at least two separate and distinct, diametrically intersecting and inwardly influenced circumferential lines of retention when worn on the head.
    Type: Application
    Filed: April 2, 2004
    Publication date: September 22, 2005
    Inventors: Dennis Piper, William Cleveland, John Lampe
  • Protective headguard
    Publication number: 20040250340
    Abstract: Protective headguard comprising overlapped inner and outer layers attached so as to permit frictional sliding of at least one area of the outer layer over the inner layer.
    Type: Application
    Filed: February 4, 2004
    Publication date: December 16, 2004
    Inventors: Dennis Piper, William Cleveland, John K. Lampe