Patents by Inventor Josef Versch

Josef Versch 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).

  • Oil or gas field casing
    Patent number: 4609212
    Abstract: The made thread end of an oil or gas field casing is tapered at a range of from 1:8 to 1:6.5 and a thread pitch of 3.2 to 2 threads per inch, these dimensions being applied to a pipe larger than 400 mm diameter and a wall thickness of up to 32 mm.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: September 2, 1986
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Armin Hosang, Josef Versch