Patents by Inventor William Ledewitz

William Ledewitz 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).

  • Stackable toothpaste tube
    Patent number: 5299689
    Abstract: A blow-molded toothpaste tube being rectangular-oval in configuration for display without a carton, and having a bottom and top narrow, flat, parallel panels and wider front and rear panels for brand identification and indicia. The tubes are stackable horizontally on one of the narrow panels to a selected vertical height on a shelf.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: April 5, 1994
    Inventor: William Ledewitz
  • Collapsible dispensing container
    Patent number: 5024354
    Abstract: A collapsible dispensing container provided with a conical-shaped head portion having a central opening and a multilaminate tubular body. One end of the tubular body is folded over and defines an annular space between the folded over part and the upstanding wall part of the tubular body. A disc-like barrier member is provided with a peripheral flange that is located in the annular space and heat sealed to adjacent parts of the tubular body. The tubular bodies are formed with a slight taper for nesting, resulting in ease of handling and shipping.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: June 18, 1991
    Inventor: William Ledewitz
  • Collapsible dispensing container
    Patent number: 4493439
    Abstract: A collapsible dispensing container provided with a conical-shaped head portion having a central opening and a multi-laminate tubular body. One end of the tubular body is folded over and defines an annular space between the folded over part and the upstanding wall part of the tubular body. A disc-like barrier member is provided with a peripheral flange that is located in the annular space and heat sealed to adjacent parts of the tubular body. The tubular bodies are formed with a slight taper for nesting, resulting in ease of handling and shipping.
    Type: Grant
    Filed: January 4, 1984
    Date of Patent: January 15, 1985
    Inventor: William Ledewitz