Patents by Inventor Hans-Joachim Steinhoff

Hans-Joachim Steinhoff 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).

  • Patent number: 4606747
    Abstract: Described is a process for the contact-less removal of material from the surface of an article of brittle material, in particular glass, by means of a laser beam. So that material can be removed, with sharp edges, without splintering, and also in order to permit non-sharp surfaces, the invention provides that the laser beam (1) is passed through at least one at least partially absorbent matrix (7) and split into a plurality of individual beams (1'). By that means, the energy available in the laser beam is split up, in the beam cross-section, and the individual beams can be adapted to a desired removal effect. The apparatus for carrying out the process is characterized in that the matrix (7) has straight and/or curved fields (8, 9) with preferably a high absorption capability in respect of laser beams.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: August 19, 1986
    Assignee: Schott-Zwiesel-Glaswerke AG
    Inventor: Hans-Joachim Steinhoff