Patents by Inventor Carlos De Alvaro

Carlos De Alvaro 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).

  • Polyurethane hot-melt adhesives for the production of cork stoppers
    Publication number: 20030114626
    Abstract: Reactive hot-melt adhesive with a softening-point between 90° C. and 160° C.—in particular reactive polyurethane hot-melt adhesives—are suitable for the adhesion bonding of mouldings made of agglomerated cork to discs made of natural cork. In this way it is possible for high-quality cork-stopper composites for the sealing of beverage bottles to be produced in very efficient and cost-effective manner.
    Type: Application
    Filed: June 27, 2002
    Publication date: June 19, 2003
    Inventors: Uwe Franken, Hartmut Primke, Carlos De Alvaro