Patents by Inventor Gunter Langner

Gunter Langner 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).

  • Cyclic acetals of polyols, their production and their use as non-discoloring anti-ozonants
    Patent number: 4088630
    Abstract: Cyclic acetals which may be obtained by reacting tri- to hexa-ols with tetrahydrobenzaldehydes can be used as non-discoloring stabilizers for natural and/or synthetic rubber against ozone attack.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: May 9, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Roos, Gunter Langner, Theo Kempermann, Wolfgang Redetzky