Patents by Inventor Daniel E. Bufanda

Daniel E. Bufanda 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).

  • Microcellular foam dielectric for use in transmission lines
    Patent number: 6956068
    Abstract: The present invention is directed to a novel foamed polymer material for use as a dielectric in electric transmission lines. The foam dielectric of the present invention is obtained from extrusion of a polymer alloy and a supercritical fluid, especially carbon dioxide. Specifically, the foam polymer dielectric is made by: (1) feeding a polymer alloy into an extruder and heating the polymer alloy, (2) feeding a supercritical fluid into the extruder, (3) mixing the polymer alloy and the supercritical fluid, (4) exiting the polymer alloy and the supercritical fluid from the extruder, and (5) passing the polymer alloy and the supercritical fluid through a crosshead. The foam dielectric of the present invention may be used in coaxial transmission lines. In this embodiment, an inner conductor is surrounded by the foam dielectric, which is further surrounded by a second conductor. Stripline and microstripline transmission lines may also be manufactured using the disclosed foam dielectric.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: October 18, 2005
    Assignee: Radio Frequency Systems, Inc.
    Inventors: Daniel E. Bufanda, Karl Audenaerde
  • Microcellular foam dielectric for use in transmission lines
    Publication number: 20030087975
    Abstract: The present invention is directed to a novel foamed polymer material for use as a dielectric in electric transmission lines. The foam dielectric of the present invention is obtained from extrusion of a polymer alloy and a supercritical fluid, especially carbon dioxide.
    Type: Application
    Filed: July 18, 2002
    Publication date: May 8, 2003
    Applicant: ALCATEL
    Inventors: Daniel E. Bufanda, Karl Audenaerde
  • Method of attaching a connector to a coaxial cable and the resulting assembly
    Patent number: 5802710
    Abstract: A method of attaching a connector to a coaxial cable having concentric inner and outer conductors comprises the following steps. An end of the cable is prepared to expose a portion of the inner conductor and to expose a portion of the outer conductor. An insulative disc of the connector is installed onto the exposed portion of the inner conductor. An inner contact of the connector is installed onto the exposed portion of the inner conductor. A solder preform is installed onto the exposed portion of the outer conductor. A body member of the connector is installed over the solder preform onto the exposed portion of the outer conductor. To complete the cable assembly, the solder preform is melted to firmly attach the body member of the connector to the exposed portion of the outer conductor of the cable.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: September 8, 1998
    Assignee: Andrew Corporation
    Inventors: Daniel E. Bufanda, John H. Dykstra, Jeff A. Ferdina