Patents by Inventor Ralf J. Terbruggen

Ralf J. Terbruggen 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).

  • Continuous barcode marking system
    Patent number: 5521709
    Abstract: A method and apparatus is provided for producing single width barcodes in a continuous, serpentine pattern. This pattern provides continuity of operation for laser marking instruments and thereby results in the formation of more uniform and higher quality barcode indicia. The use of a continuous serpentine pattern also increases the speed at which the code may be written onto a substrate. This marking method is particularly appropriate for use in marking a wide variety of materials including semiconductors, metals, plastics and ceramics.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: May 28, 1996
    Assignee: International Business Machines Corporation
    Inventors: Douglas C. Bossen, Chin-Long Chen, Fuad E. Doany, Mu-Yue Hsiao, Ricky A. Rand, Ralf J. Terbruggen