Patents by Inventor Thomas Stehlin

Thomas Stehlin 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).

  • New multicompatible optical coupler produced by injection molding
    Patent number: 5208884
    Abstract: A process for the production of optical couplers from polymers in which the coupler structure is produced by injection molding and the polymers employed are preferably amorphous polymers, in particular PMMA, polystyrenes, polycarbonates, polyolefins, polyesters, polysulfones, polyether sulfones, polyether imides, polyarylates, polyamides or polyester carbonates. The coupler element is solid and may be coated with a polymer which has a lower refractive index than the coupler, so that the light propagation takes place in the coupler itself.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: May 4, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Groh, Andreas Brockmeyer, Jurgen Theis, Thomas Stehlin