Patents by Inventor Carmen Bier

Carmen Bier 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).

  • Fastening element
    Patent number: 7824142
    Abstract: A fastening element has a core zone (14) formed of a relatively hard carbon steel, a skin zone (17) located outwardly of the core zone (14) and formed of a first low-carbon austenitic steel alloyed with a first alloy metal, and an intermediate zone (15a, 15b) provided between the core zone (14) and the skin zone (17) and formed of a second low-carbon steel having a smaller hardness than the steel the core zone (14) is formed of.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: November 2, 2010
    Assignee: Hilti Aktiengesellschaft
    Inventors: Gerald Felder, Carmen Bier
  • Fastening element
    Publication number: 20090060678
    Abstract: A fastening element has a core zone (14) formed of a relatively hard carbon steel, a skin zone (17) located outwardly of the core zone (14) and formed of a first low-carbon austenitic steel alloyed with a first alloy metal, and an intermediate zone (15a, 15b) provided between the core zone (14) and the skin zone (17) and formed of a second low-carbon steel having a smaller hardness than the steel the core zone (14) is formed of.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 5, 2009
    Inventors: Gerald Felder, Carmen Bier