Patents by Inventor Johan W. Koene

Johan W. Koene 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).

  • Optical slip rings
    Patent number: 4447114
    Abstract: An optical coupling body is disposed between first and second arrays of optical conductors mounted for rotation at equal but opposite rates relative to the body. Either light reflective or light transmissive means is arranged in the body to effect constant coupling of individual conductors in the first array with respective conductors in the second array.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: May 8, 1984
    Assignee: Hollandse Signaalapparaten B.V.
    Inventor: Johan W. Koene