Patents by Inventor Peter Biberbach

Peter Biberbach 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 the production of vanadium carbide coatings on iron
    Patent number: 4440581
    Abstract: Vanadium carbide layers are produced on iron and iron alloys having a content of at least 0.1 weight % carbon by treating the workpiece at 800.degree. to 1100.degree. C. in a salt bath which contains 1-30 weight % of vanadium or ferrovanadium powder. The salt bath consists of alkaline earth and/or alkali metal halide.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: April 3, 1984
    Assignee: Degussa Aktiengesellschaft
    Inventors: Ulrich Baudis, Peter Biberbach, Wolfgang Weber
  • Process for nitriding iron and steel in salt baths regenerated with triazine polymers
    Patent number: 4019928
    Abstract: Iron and steel are nitrided in a salt bath in a process favorable to the environment. The salt bath consists essentially of potassium cyanate, sodium cyanate, potassium carbonate, and sodium carbonate. Preferably, air flows through the bath. The bath preferably contains 25-57 weight % of cyanate calculated as cyanate ion, 0 to 30% alkali metal chloride and the balance carbonate and alkali metal ions. Preferably cyanide is omitted, but it can be present in an amount up to 5%. Without removing the waste salt, the bath is regenerated by adding melon, melam, or melem.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: April 26, 1977
    Assignee: Duetsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Hermann Beyer, Peter Biberbach, Christian Scondo