Patents by Inventor Robert E. Ralphs

Robert E. Ralphs 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).

  • Upwardly molded locking flange on carton
    Patent number: 4582248
    Abstract: A molded carton is provided having a lock system for retaining a cover section in an overlying closed relation with the open top of a base section. The lock system includes a hinged flange mounted on a front segment of the base sections defining the open top. The flange is mounted for limited inward pivotal movement from a normal upright position wherein the flange projects generally upwardly from the front of the base section. The flange is provided with a predetermined number of outwardly projecting protrusions which, when the cover section is in closed position, interlockingly engage a corresponding number of apertures formed in the front wall of the cover section.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: April 15, 1986
    Assignee: Packaging Corporation of America
    Inventors: Kenneth D. Bixler, Donald C. McCann, Robert E. Ralphs, Henry A. Lord, Richard F. Reifers
  • Molded pulp tray for beverage and food
    Patent number: 4208006
    Abstract: A tray of molded pulp or like material for carryout food and beverage comprising one or more pockets for receiving and firmly supporting any one of several different size beverage containers normally used in the carry-out food trade, each of the pockets having a circular floor portion, a web portion extending for a full 360.degree.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: June 17, 1980
    Assignee: Diamond International Corporation
    Inventors: Kenneth D. Bixler, Robert E. Ralphs, Henry A. Lord, Richard F. Reifers
  • Convective heating tray
    Patent number: D270422
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: September 6, 1983
    Assignees: General Foods Corporation, Diamond International Corp.
    Inventors: Nabil A. El-Hag, Kenneth D. Bixler, Robert E. Ralphs
  • Convective heating tray
    Patent number: D270703
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: September 27, 1983
    Assignees: General Foods Corporation, Diamond International Corp.
    Inventors: Nabil A. El-Hag, Marilee D. Egan, Kenneth D. Bixler, Robert E. Ralphs
  • Carrier for beverage cups
    Patent number: D279259
    Type: Grant
    Filed: January 12, 1983
    Date of Patent: June 18, 1985
    Assignee: Packaging Corporation of America
    Inventors: Kenneth D. Bixler, Robert E. Ralphs