Patents by Inventor Dierk Schumacher

Dierk Schumacher 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).

  • Publication number: 20100150976
    Abstract: An object made of at least two layers is disclosed, in which a first layer is a biologically degradable water-soluble support material containing an active agent and connected to at least one second layer, which is made up of a biologically degradable but water-insoluble material in the form of fibers. The active agents can be pharmaceutical agents, cosmetics, cleaning agents, agrochemicals and biocides. The object serves for the controlled release of at least one active agent based on the effect of water. The fiber structure of the second layer permits a control of the speed of water entry and/or exit.
    Type: Application
    Filed: April 2, 2008
    Publication date: June 17, 2010
    Inventors: Iris Schnitzler, Christian Hausen, Michael Roreger, Dierk Schumacher
  • Publication number: 20080145388
    Abstract: The invention relates to a product for the targeted release of active substances, especially detergents and/or cosmetic active substances. The inventive product has a layer structure, one layer being impermeable to the active substance and another layer being permeable to the active substance. The two layers define a compartment between them which contains the active substance and optionally a gas-releasing component. The product is preferably suitable for single use and can be used as a cosmetic agent and/or as a cleaning agent.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 19, 2008
    Inventors: Michael Roreger, Qian-Yi Li, Iris Schnitzler, Dierk Schumacher
  • Publication number: 20050207680
    Abstract: The subject matter of the invention is a foil bag for packaging moist tissues, said foil bag, which is formed from a hose-like, flexible foil, comprising on its top side a dispensing opening for one-by-one removal of the moist tissues. To provide a foil bag of the type mentioned herein above that keeps the tissues moist and clean over a long period of time even after the package has been put to use, a mechanically openable and closable closure element (16) is embedded in an opening provided on the top side (12) of the foil bag (10), said closure element forming a substantially airtight engagement with the foil bag (10) and being reclosable so as to form an airtight engagement after each use.
    Type: Application
    Filed: January 7, 2005
    Publication date: September 22, 2005
    Inventors: Dierk Schumacher, Josef Pawlowski