Patents by Inventor Rijnder Hagedoorn

Rijnder Hagedoorn 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).

  • Device for protecting electric systems, particularly telecommunication systems, against overvoltage pulses
    Patent number: 4180843
    Abstract: Device for protecting electric systems, particularly telecommunication systems, against overvoltage, comprising the combination of a tube of conducting material and permitting a passage through the wall with an overvoltage protective circuit placed in the tube and comprising at least two diverting components, in such a way that a voltage peak, even with a steepness of 5kV/nsec, can be diverted step by step.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: December 25, 1979
    Assignee: De Staat der Nederlanden, te dezen vertegenwoordigd door de directeur-generaal der Posterijen, Telegrafie en Telefonie
    Inventors: Rijnder Hagedoorn, Ernest J. E. Koenderink