Patents by Inventor Hans-Werner Ridder

Hans-Werner Ridder 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).

  • Method and apparatus for testing materials such as disease in living trees
    Patent number: 4283629
    Abstract: The non-destructive testing of materials such as for disease in living trees is carried out by determining at each of a plurality of positions in a given cross-section of said material to be tested the coefficient of absorption of a predetermined radiation source, and converting said coefficient of absorption at each of said position into a computerized tomographic display. The radiation source is selected from the group consisting of gamma, x-ray, and neutron radiation.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: August 11, 1981
    Assignee: Adolf Habermehl
    Inventors: Adolf Habermehl, Hans-Werner Ridder