Patents by Inventor Jurgen Pfitzer

Jurgen Pfitzer 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).

  • Composition for the production of shaped bodies and method for the production of shaped bodies made of said composition
    Patent number: 6706106
    Abstract: The invention concerns a composition for the production of shaped bodies, consisting of polymer lignin, shellac and natural fibers and also a method for the production of shaped bodies from such a composition via production of a shaped body through extrusion.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: March 16, 2004
    Assignees: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., TECNARO Gesellschaft zur industriellen Anwendung nachwachsender Rohstoffe mbH
    Inventors: Helmut Nägele, Jürgen Pfitzer, Emilia Inone, Peter Eyerer, Norbert Eisenreich, Wilhelm Eckl
  • Method for producing a granulated intermediate product that is to be subjected to a subsequent processing in oder to form plastic shaped bodies
    Publication number: 20040012114
    Abstract: For producing a granulated intermediate product which consists of a fine-particle thermoplastic or thermoelastic polymer and substantially inert fillers for further processing into plastic shaped bodies through thermoplastic processing methods it is proposed to mix the polymer in the form of powder or particles with the fillers and compact the powder mixture without plastification of the polymer exclusively under mechanical pressure into pourable agglomerates with larger grain size. Such an agglomerate can be processed into shaped bodies in the same manner as a conventional plastic granulated material, wherein thermal damage to the fillers and the molecular structure of the polymer is reliably prevented during production of the intermediate product and extremely high fill fractions can be achieved.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 22, 2004
    Inventors: Peter Eyerer, Emilia Inone, Helmut Nagele, Wilhelm Eckl, Norbert Eisenreich, Jurgen Pfitzer
  • Plastic material made from a polymer blend
    Patent number: 6509397
    Abstract: A plastic material made from a polymer blend, is characterized in that said material contains at least one lignin-based natural polymer, in particular based on alkali lignin produced during the extraction of cellulose, and at least one other synthetic and/or natural polymer which increases the impact resistance, proteins excluded. The inventive plastic material has excellent characteristics. It is biodegradable due to the natural polymer content and has, to a considerable extent, an ecologically neutral CO2 balance. The polymer blend can be used advantageously in place of wood or wood materials.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: January 21, 2003
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Helmut Nägele, Jürgen Pfitzer, Norbert Eisenreich, Peter Eyerer, Peter Elsner, Wilhelm Eckl
  • Method for producing a rod-shaped composite part and rod-shaped composite part
    Patent number: 6478494
    Abstract: A method for producing a substantially rod-shaped composite body (6) consists of a core (4) enveloped by at least one polymer, according to which the plasticized polymer (5) is extruded onto the core (4). At least one natural polymer is used and a sliding agent on the basis of native oils and/or waxes is added before or during extrusion. The method is used for the production of writing, drawing, cosmetic pencils.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: November 12, 2002
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung E. V
    Inventors: Wilhelm Eckl, Helmut Nagele, Jürgen Pfitzer, Norbert Eisenreich, Peter Eyerer, Peter Elsner