Patents by Inventor Horst Bester

Horst Bester 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).

  • High-alloyed steel being resistive to corrosion by natural gas
    Patent number: 4390367
    Abstract: Steel is to be austenitic-ferritic at a 1:1 ratio of austenite to ferrite and contains particular alloy elements. The principal feature is, limiting the sulphure content to below 0.005% in order to obtain a particularly high toughness transversely to the main direction of working.
    Type: Grant
    Filed: June 19, 1981
    Date of Patent: June 28, 1983
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Norbert Niehaus, Rolf Popperling, Horst Bester