Patents by Inventor Norwin Ced Derby

Norwin Ced Derby 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).

  • Woven polypropylene bulk bag with polypropylene lining or liner and process for manufacturing same
    Patent number: 6302584
    Abstract: A woven polypropylene fabric flexible intermediate bulk container (“bulk bag”) is formed with a polypropylene lining bonded directly to the material of the fabric, thereby eliminating any possibility of displacement of the lining relative to the bulk bag. An improved discharge chute having an exterior woven polypropylene fabric tube and an interior polypropylene fabric film liver tube may be used in the bulk bag. In a second embodiment, a polypropylene woven fabric tube is positioned around a polypropylene film tube. The tubes are heat sealed circumferentially to each other to form a tubular blank.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: October 16, 2001
    Assignee: Super Sack Mfg. Corp.
    Inventors: Norwin Ced Derby, Craig Alan Nickell, Bobby Glenn Brown
  • Woven polypropylene bulk bag with polypropylene lining or liner and process for manufacturing same
    Patent number: 6179467
    Abstract: A woven polypropylene fabric flexible intermediate bulk container (“bulk bag”) is formed with a polypropylene lining bonded directly to the material of the fabric, thereby eliminating any possibility of displacement of the lining relative to the bulk bag. An improved discharge chute having an exterior woven polypropylene fabric tube and an interior polypropylene fabric film liner tube may be used in the bulk bag. In a second embodiment, a polypropylene woven fabric tube is positioned around a polypropylene film tube. The tubes are heat sealed circumferentially to each other to form a tubular blank.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: January 30, 2001
    Assignee: Super Sack Mfg. Corp.
    Inventors: Norwin Ced Derby, Craig Alan Nickell, Bobby Glenn Brown