Patents by Inventor Douglas E. Croft

Douglas E. Croft 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).

  • Clear plastic package
    Patent number: 5893459
    Abstract: The present invention provides a sturdy display package which, in an embodiment, is made of first and second peripherally sealed transparent PVC sheets approximately 7.5 mils thick each. The package is particularly useful for displaying and protecting small items such as pain reliever packets or condoms. The invention includes a method and apparatus for making such a package. The first sheet is positioned over a nesting plate having a plurality of nesting modules, each corresponding to one package and being independently height-adjustable by a shim at a selected location to correct sealing flaws. The second sheet is then positioned over the first sheet so that the items are between the sheets. An RF-sealing die is provided having package-shaped sealing dies, each defining a pocket. The sealing die and nesting plate are pressed together so that each pocket receives a bulge formed by from one of the items.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: April 13, 1999
    Assignee: Modern Aids, Inc.
    Inventor: Douglas E. Croft
  • Apparatus for manufacturing clear plastic packages
    Patent number: 5713182
    Abstract: The present invention provides a sturdy display package which, in an embodiment, is made of first and second peripherally sealed transparent PVC sheets approximately 7.5 mils thick each. The package is particularly useful for displaying and protecting small items such as pain reliever packets or condoms. The invention includes a method and apparatus for making such a package. The first sheet is positioned over a nesting plate having a plurality of nesting modules, each corresponding to one package and being independently height-adjustable by a shim at a selected location to correct sealing flaws. The second sheet is then positioned over the first sheet so that the items are between the sheets. An RF-sealing die is provided having package-shaped sealing dies, each defining a pocket. The sealing die and nesting plate are pressed together so that each pocket receives a bulge formed by from one of the items.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: February 3, 1998
    Assignee: Modern Aids, Inc.
    Inventor: Douglas E. Croft
  • Clear plastic package and method of making same
    Patent number: 5636497
    Abstract: The present invention provides a sturdy display package which, in an embodiment, is made of first and second peripherally sealed transparent PVC sheets approximately 7.5 mils thick each. The package is particularly useful for displaying and protecting small items such as pain reliever packets or condoms. The invention includes a method and apparatus for making such a package. The first sheet is positioned over a nesting plate having a plurality of nesting modules, each corresponding to one package and being independently height-adjustable by a shim at a selected location to correct sealing flaws. The second sheet is then positioned over the first sheet so that the items are between the sheets. An RF-sealing die is provided having package-shaped sealing dies, each defining a pocket. The sealing die and nesting plate are pressed together so that each pocket receives a bulge formed by from one of the items.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: June 10, 1997
    Assignee: Modern Aids, Inc.
    Inventor: Douglas E. Croft
  • Package for individual product packages
    Patent number: D438793
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: March 13, 2001
    Inventor: Douglas E. Croft
  • Package for individual product packages
    Patent number: D368428
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: April 2, 1996
    Assignee: Modern Aids, Inc.
    Inventor: Douglas E. Croft