Patents by Inventor Rolf Koesters

Rolf Koesters 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).

  • TUNGSTEN CARBIDE-BASED CEMENTED HARD MATERIAL
    Publication number: 20220411904
    Abstract: A tungsten-carbide-based hard material includes the following components: tungsten carbide with an average particle size of 0.1-1.3 ?m; 1.0-5.0 wt. % (Co+Ni), with a ratio of Co/(Co+Ni) in wt. % of 0.4?Co/(Co+Ni)?0.95; 0.1-1.0 wt. % Cr, with a ratio of Cr to (Co+Ni) in wt. % of 0.05 Cr/(Co+Ni) 0.20; 0.01-0.3 wt. % Mo; and 0.02-0.45 wt. % Me, where Me represents one or more elements from the group Ta, Nb, Hf and Ti, preferably Ta and/or Nb; and wherein 0.01?Me/(Co+Ni)?0.13.
    Type: Application
    Filed: October 13, 2020
    Publication date: December 29, 2022
    Inventors: Claudio Bertalan, Ralph Useldinger, Rolf Koesters