Patents Assigned to Ultra Pac, Inc.
  • Rose box with interchangeable lid and base
    Patent number: 5356023
    Abstract: A container designed for protecting and displaying flowers. The container comprising interchangeable, rectangular lid and base components. The components are preferably made of plastic, such as polyethylene tetrafluoride. Each component has two outwardly extending rims. One rim has a male protrusion and the other has a female recess. In operation, the two sides of opposing lid and base components form a loose joint. Each component also has two end portions. Each end portion has an interlocking lip. The lips extend over halfway across each end portion. Lips on opposing lid and base components are forced past each other to interlock and hold the container together. The components also have a rectangular extension at one end for hanging the container on display or hanging the components in storage.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: October 18, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Container with hinged lid
    Patent number: D328705
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: August 18, 1992
    Assignee: Ultra Pac, Inc.
    Inventor: Cal Krupa
  • Container with hinged lid
    Patent number: D329198
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: September 8, 1992
    Assignee: Ultra Pac, Inc.
    Inventor: Cal Krupa
  • Container with cover
    Patent number: D329572
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: September 22, 1992
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Berry box
    Patent number: D343576
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: January 25, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Snack food container with lid
    Patent number: D344660
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: March 1, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Tray for baked goods
    Patent number: D345894
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: April 12, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Container for baked food products
    Patent number: D345912
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: April 12, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Fruit clamshell container
    Patent number: D346552
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: May 3, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Storage and display container for food
    Patent number: D346554
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: May 3, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Sandwich container
    Patent number: D349050
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: July 26, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Lunch box
    Patent number: D349633
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: August 16, 1994
    Assignee: Ultra Pac. Inc.
    Inventor: Calvin S. Krupa
  • Food package with hinged lid
    Patent number: D351999
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: November 1, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Pastry package
    Patent number: D352454
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: November 15, 1994
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Food package with hinged lid
    Patent number: D354435
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: January 17, 1995
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Food package with hinged lid
    Patent number: D354436
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: January 17, 1995
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Fruit box
    Patent number: D359901
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: July 4, 1995
    Assignee: Ultra Pac, Inc.
    Inventors: Robert Knoss, Calvin S. Krupa
  • Fruit container
    Patent number: D360825
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: August 1, 1995
    Assignee: Ultra Pac, Inc.
    Inventors: Robert Knoss, Calvin S. Krupa
  • Berry box
    Patent number: D361035
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: August 8, 1995
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Berry box
    Patent number: D361036
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: August 8, 1995
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa