Patents by Inventor Don R. Bittner

Don R. Bittner 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).

  • Rotating extrusion die with spray nozzle
    Patent number: 7008204
    Abstract: An extrusion die for extruding biodegradable material, the extrusion die comprising: a mandrel; a nozzle extending from the mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: March 7, 2006
    Assignee: Amylex Corporation
    Inventors: Hans G. Franke, Don R. Bittner
  • Rotating extrusion die with spray nozzle
    Publication number: 20030211187
    Abstract: An extrusion die for extruding biodegradable material, the extrusion die comprising: a mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.
    Type: Application
    Filed: June 18, 2003
    Publication date: November 13, 2003
    Inventors: Hans G. Franke, Don R. Bittner
  • Rotating extrusion die with spray nozzle
    Patent number: 6599451
    Abstract: An extrusion die for extruding biodegradable material, the extrusion die comprising: a mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: July 29, 2003
    Inventors: Hans G. Franke, Don R. Bittner
  • Rotating extrusion die with spray nozzle
    Publication number: 20020109252
    Abstract: An extrusion die for extruding biodegradable material, the extrusion die comprising: a mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.
    Type: Application
    Filed: February 13, 2001
    Publication date: August 15, 2002
    Inventors: Hans G. Franke, Don R. Bittner