Patents by Inventor Hans-Joachim Winkelmann

Hans-Joachim Winkelmann 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).

  • Device for the protection of cylinder valve for steel cylinders
    Patent number: 4664286
    Abstract: A device for protecting the gas cylinder valve of a steel cylinder has a neck ring for screwing on the protective device. The protective device is in the form of a clamp collar having a protective strap which surrounds the gas cylinder valve.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: May 12, 1987
    Assignee: Messer. Griesheim, GmbH
    Inventors: Hans-Joachim Winkelmann, Wolfgang Busch