Patents by Inventor Erwin Roeder

Erwin Roeder 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).

  • Method of producing an optical fiber
    Patent number: 4063914
    Abstract: A method of and a device for a simultaneous extrusion of multi-component co-axial rods with very uniform, centered cores. A block of cladding material has core material co-axially contained in the geometric relationship desired for the ultimate product, and extrusion is by pressure opposite to the direction of material flow.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: December 20, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Erwin Roeder, Edmund Steinbeck
  • Device for manufacturing hollow profiled bodies by extrusion
    Patent number: 4022603
    Abstract: An extrusion die for forming hollow bodies has a flow-adjusting ring which also defines the outer periphery of the flow gap for the outer portion of the body.
    Type: Grant
    Filed: October 7, 1975
    Date of Patent: May 10, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Erwin Roeder, Edmund Steinbeck