Patents by Inventor David R. Dugan

David R. Dugan 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).

  • Patent number: 4235338
    Abstract: A container comprising a hollow tray and a domed lid, each of which are of unitary molded plastic construction. The tray has a planar bottom wall peripherally encompassed by a generally outwardly and upwardly flaring upstanding wall with a rim over which the lid is snugly attachable. Peripherally interspaced indents are molded in and offset interiorly from the upstanding wall of the tray and define interiorly facing surface regions disposed in proximately perpendicular relationship with the bottom wall of the tray.The container is particularly suitable for packaging a plurality of small dimensionally corresponding containers, such as ampuls, or the like. As such, it provides a package accommodating a plurality of rows of containers together with an upstanding plastic separator sheet separating each row of containers.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: November 25, 1980
    Assignee: Owens-Illinois, Inc.
    Inventors: David R. Dugan, Kenneth E. Prince
  • Patent number: D254958
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: May 13, 1980
    Assignee: Owens-Illinois Inc.
    Inventors: David R. Dugan, Kenneth E. Prince
  • Patent number: D255658
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: July 1, 1980
    Assignee: Owens-Illinois, Inc.
    Inventors: David R. Dugan, Kenneth E. Prince
  • Patent number: D255659
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: July 1, 1980
    Assignee: Owens-Illinois, Inc.
    Inventors: David R. Dugan, Kenneth E. Prince