Patents by Inventor Gerd Betz

Gerd Betz 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).

  • Method and apparatus for treatment of liquid photographic processing wastes
    Patent number: 5245111
    Abstract: A method and an apparatus for treatment of liquid wastes from photographic processes are described, in which the wastes to be treated are(a) subjected to an oxygen oxidation as well as(b) an ozone oxidation,(c) optionally from the oxidized wastes halide ions are removed,(d) the wastes, from which optionally halide ions are extensively removed, are subjected to an anodic after-oxidation as well as(e) a cathodic reduction, then(f) neutralized and(g) set free from precipitated solids by filtration.The invention allows an especially effective reduction of damaging substances which are obtained in photographic processes.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: September 14, 1993
    Assignee: Eastman Kodak Company
    Inventor: Gerd Betz