Patents by Inventor Siegfried Thomalla

Siegfried Thomalla 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).

  • Method for adjusting specific quality characteristics and properties of pipes by means of a pressure test
    Patent number: 7610796
    Abstract: The invention relates to a method for adjusting specific quality characteristics and/or properties of pipes (1) by means of a pressure test, especially for steel pipes of pipe conduits for combustible media. According to said method, in addition to the water volume required for the pressure test according to DIN EN 10208 part 2, an additional water volume (12) is filled into every single pipe (1) with the proviso that the pipe material is slightly subjected to plastic stress.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: November 3, 2009
    Assignee: Eisen- und Metallwerke Ferndorf GmbH
    Inventors: Siegfried Thomalla, Franz-Josef Schmeck, Hans-Joachim de la Camp
  • Method for adjusting specific quality characteristics and properties of pipes by means of a pressure test
    Publication number: 20070143049
    Abstract: The invention relates to a method for adjusting specific quality characteristics and/or properties of pipes (1) by means of a pressure test, especially for steel pipes of pipe conduits for combustible media. According to said method, in addition to the water volume required for the pressure test according to DIN EN 10208 part 2, an additional water volume (12) is filled into every single pipe (1) with the proviso that the pipe material is slightly subjected to plastic stress.
    Type: Application
    Filed: August 13, 2004
    Publication date: June 21, 2007
    Inventors: Siegfried Thomalla, Franz-Josef Schmeck, Hans-Joachim de la Camp