Patents by Inventor Laurence R. DeForest

Laurence R. DeForest 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: 4190189
    Abstract: A closure member, for a container, formed from corrugated paperboard, plastic, or other similar substance is provided. The closure member increases the strength of the container and the rigidity of the container sidewalls. In a preferred embodiment of the invention the edges of the closure member are flattened and formed into a depending skirt. The edge of the container sidewall is then rolled over the depending skirt to form a sealed unit. In a second embodiment of the invention, in which the edge of the closure member is not flattened, the closure member is inserted into the container and the edge of the container sidewall is rolled to form a support for the closure member. The edge of the closure member is sealed to the container sidewall in this second embodiment.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: February 26, 1980
    Assignee: Phillips Petroleum Co.
    Inventor: Laurence R. DeForest
  • Patent number: 4157147
    Abstract: A container is disclosed comprising a generally cylindrical or conical tubular sidewall; a bottom closure secured to a lower portion of the sidewall to seal the bottom end of the container; and an inwardly disposed rim being circumferentially continuous about the periphery of the top end of the container and comprising an upper end portion of the sidewall extending inwardly, downwardly, and outwardly in such a fashion that the edge of the inner surface of the upper end of the sidewall is in a position which is higher than the lowest portion of the rim. The incorporation of a top closure with such a container is also disclosed.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: June 5, 1979
    Assignee: Phillips Petroleum Company
    Inventors: Laurence R. DeForest, Frank P. Richards