Patents by Inventor Hans-Joachim Gueldenzopf

Hans-Joachim Gueldenzopf 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).

  • Twist-on closure mechanism for container
    Patent number: 6257430
    Abstract: A closing device that has a container shoulder, a container head with an opening for dispensing the contents of the container, and a closure cap operated by a twisting motion. The closure cap has an inner cylinder, a cover plate with at least one window located in the region bounded by the inner cylinder, and a closure lid supported by ribs. Portions a freshness seal secured on the opening of the container head are visible from the outside even if the container is closed.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: July 10, 2001
    Assignee: Dental-Kosmetik GmbH Dresden
    Inventors: Rolf W. Rinnie, Gerhard Stoll, Guido Johne, Jochen Jahn, Hans-Joachim Gueldenzopf