Patents by Inventor Gerold Dahm

Gerold Dahm 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).

  • Process for improving the contrast in the structure of 3-dimensional surfaces
    Patent number: 6232046
    Abstract: Three-dimensional, patterned surfaces, which were produced by dry-etching technology and have zones with different degrees of polymerization, are subjected to a time-limited dry-etching process in fluorine-containing plasma, In this context, an ablation process is used, which proceeds as a function of time, from incompletely polymerized material to completely polymerized material. Weakly polymerized regions, in particular those resulting from the proximity effect, may be removed.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: May 15, 2001
    Assignee: Deutsche Telekom AG
    Inventors: Hans Wilfried Peter Koops, Sergey Babine, Gerold Dahm, Alexey Holopkin