Patents by Inventor Johannes Mattheus Elzinga

Johannes Mattheus Elzinga 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).

  • X-ray system having a driving mechanism for an X-ray source and an X-ray detector
    Patent number: 4101774
    Abstract: The tomography movements of the X-ray source and detector are matched electronically to each other by comparing the positions thereof. Via a memory, a weighed position for the source is determined with reference to a desired velocity ratio and the position of the X-ray source, which position is compared to the actual position of the detector. The difference between the two determines the value of a correction signal for controlling the driving means of the X-ray detector.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: July 18, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Johannes Mattheus Elzinga, Albertus Derk Sondern