Patents by Inventor Desiree Derin-Holzapfel

Desiree Derin-Holzapfel 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).

  • Buoyancy aid with residual buoyancy
    Patent number: 8540539
    Abstract: A buoyancy aid for assisting in swimming lessons and for placing onto an arm, comprising: a) an element which is ring-shaped or which can be connected into a ring, and which can be arranged on an arm; b) an inflatable chamber which is attached to the ring-shaped element; wherein c) the chamber and/or the element which is ring-shaped or which can be connected into a ring comprise(s) a material having a density lower than the density of water.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: September 24, 2013
    Assignee: Derin Holzapfel & Co. Grundbesitz Und Beteilgungs KG
    Inventor: Désirée Derin-Holzapfel
  • Buoyancy aid with residual buoyancy
    Publication number: 20070021017
    Abstract: A buoyancy aid for assisting in swimming lessons and for placing onto an arm, comprising: a) an element which is ring-shaped or which can be connected into a ring, and which can be arranged on an arm; b) an inflatable chamber which is attached to the ring-shaped element; wherein c) the chamber and/or the element which is ring-shaped or which can be connected into a ring comprise(s) a material having a density lower than the density of water.
    Type: Application
    Filed: October 18, 2005
    Publication date: January 25, 2007
    Inventor: Desiree Derin-Holzapfel