Patents by Inventor Ru/ diger Ludewig

Ru/ diger Ludewig 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).

  • Apparatus for purifying laser gas
    Patent number: 5001721
    Abstract: An apparatus for purifying laser gas comprises first and second tubes 20, 22 in good thermal contact, liquid nitrogen flowing through the first tube 20 and laser gas flowing through the second tube 22. The laser gas is precooled in an arrangement of third and fourth tubes 24, 26, the laser gas to be cleaned entering the third tube 24 which opens into the second tube 22 so that precooled laser gas enters the second tube which opens into the fourth tube to effect the precooling.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: March 19, 1991
    Assignee: Lambda Physik Forschungs- und Entwicklungsgesellschaft mbH
    Inventors: Ru/ diger Ludewig, Frank Voss