Patents by Inventor Dirk G. Langer

Dirk G. Langer 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).

  • Top lock lid
    Patent number: 5704510
    Abstract: A mug comprising a container and a lid, with the container having an inwardly projecting seal rim and inwardly projecting retainers spaced above the seal rim. The lid has a disc for engagement with the upper surface of the seal rim with a retainer opening for passing the retainer, and a catch for positioning under the retainer to retain the lid in the container on the seal rim. The retainer may be formed integrally with the container, or may be a stud carried in an opening in the container. The catch of the lid preferably includes a flexible center with a ramp at each end joining the catch to the disc.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: January 6, 1998
    Inventors: Charles H. Feltman, III, Dirk G. Langer
  • Insulated mug
    Patent number: D290568
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: June 30, 1987
    Assignee: A California General Partnership 2nd Wave
    Inventors: Charles H. Feltman, Dirk G. Langer
  • Mug
    Patent number: D370156
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: May 28, 1996
    Inventors: Charles H. Feltman, III, Dirk G. Langer