Patents by Inventor David A. Diederich

David A. Diederich 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).

  • Heat-resisting package for hot-melt adhesive
    Patent number: 6294761
    Abstract: A method for heat-sealing a sheet of heat-resisting polymer to a heat-resisting polymeric fitment, which enables the fabrication of a containment and delivery system for a bulk quantity of meltable adhesive, wherein a rigid container is lined by a heat-resisting flexible envelope, with a heater interposed between them. Ports are sealed to the envelope to permit the filling and draining of molten adhesive.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: September 25, 2001
    Inventors: Raymond David Diederich, Walter E. Littman
  • Child-resistant locking device for reclosable bag
    Patent number: 5681115
    Abstract: A child-resistant locking device for a flexible bag, pouch or the like having an opening and requiring child-resistant packaging which is to be filled with hazardous articles including a zipper operatively associated with the opening and movable between an open and closed position, the zipper being provided with a pull tab having an opening for actuating the zipper and a releasable lock supported on the bag operatively associated with the pull tab opening for releasably retaining the zipper in the closed position with the lock including elements requiring manual dexterity with both hands at a skill level common to an adult as opposed to a child for release.
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: October 28, 1997
    Inventors: R. David Diederich, Ray G. Brooks, Tim W. Brooks
  • Ice hockey stick
    Patent number: 4180413
    Abstract: An ice hockey stick having an elongated handle attached to a blade. The handle has a solid lightweight and flexible wood body reinforced with plastic sheet members provided with longitudinally oriented glass fibers. The blade has a rocker shaped bottom with a heel carrying an epoxy wear strip. The blade is reinforced with glass fiber fabric impregnated with a resin plastic.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: December 25, 1979
    Assignee: The Northland Group, Inc.
    Inventor: David A. Diederich
  • Ice hockey stick blade structure
    Patent number: 4172594
    Abstract: An ice hockey stick having an elongated handle attached to a blade. The handle has a solid lightweight and flexible wood body reinforced with plastic sheet members provided with longitudinally oriented glass fibers. The blade has a rocker shaped bottom with a heel carrying an epoxy wear strip. The blade is reinforced with glass fiber fabric impregnated with a resin plastic.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: October 30, 1979
    Assignee: The Northland Group, Inc.
    Inventor: David A. Diederich
  • Ice hockey stick
    Patent number: 4134587
    Abstract: An ice hockey stick having an elongated handle attached to a blade. The handle has a solid lightweight and flexible wood body reinforced with plastic sheet members provided with longitudinally oriented glass fibers. The blade has a rocker shaped bottom with a heel carrying an epoxy wear strip. The blade is reinforced with glass fiber fabric impregnated with a resin plastic.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: January 16, 1979
    Assignee: The Northland Group, Inc.
    Inventor: David A. Diederich