Patents by Inventor Bernd Eilhardt

Bernd Eilhardt 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).

  • Thermally insulated tube
    Patent number: 4351365
    Abstract: A tube system, which includes an inner and a concentric outer tube, is provided with a spacer made by cutting oblique notches into a polyurethane foam layer on a paper ribbon and by helically wrapping the ribbon onto the inner tube, the oblique and tapered foam elements pointing inwardly or outwardly, but the notches are aligned to form axial ducts. After forming the outer tube about the spacer, these ducts are filled with material that foams in situ.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: September 28, 1982
    Assignee: Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
    Inventors: Klaus Bauermeister, Gerhard Ziemek, Bernd Eilhardt
  • Foam insulated conductor
    Patent number: 4151238
    Abstract: Foam insulated conductor is produced by heating the conductor to a temperature at which the conductor retains sufficient heat to effect crosslinking and foaming of a polymer composition, followed by extruding the polymer composition onto the conductor, with the crosslinking and foaming being effcted by the retained heat.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: April 24, 1979
    Assignee: Kabel-und Metallwerke Gutenhoffnungshuette AG
    Inventors: Gerhard Ziemek, Bernd Eilhardt
  • Polymer composition for bonding to copper
    Patent number: 3933737
    Abstract: A composition for bonding to copper comprised of copolymers and ionic copolymers of ethylene and an .alpha.,.beta.-monoethylenically unsaturated carboxylic acid having incorporated therein a copper deactivating amount of a copper stabilizer or deactivator. The composition has improved moisture-resistant bond strength on copper and laminates of copper and the composition may be employed as a protective sheathing for cables.
    Type: Grant
    Filed: April 22, 1974
    Date of Patent: January 20, 1976
    Assignee: Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
    Inventors: Fritz Glander, Bernd Eilhardt