Patents by Inventor Robert R. Roper

Robert R. Roper 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: 5850935
    Abstract: A container having a base and a sidewall portion extending upwardly therefrom is characterized by striations in the sidewall which define removable strips of the sidewall portion. A shoulder adjacent the opening of the container improves handling of the container, prevents or restricts undesired rotation of the container, restricts or preventing the flow of gas or liquid or solid from above the shoulder means to below the shoulder or vice versa, and stabilizes the containers when, for example, a plurality of them is arranged appropriately. A method of use of such containers is disclosed, including the steps of providing a plurality of such containers and arranging them appropriately.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: December 22, 1998
    Assignee: Ropak Corporation
    Inventors: Frano Luburic, Robert R. Roper