Patents Assigned to Ultra Pac, Inc.
  • Fruit box
    Patent number: 5653345
    Abstract: A rigid, sturdy, two-piece reusable container forming individual cups to contain fruit or other perishables. The device includes a brace that provides support, rigidity, separates the cups of different containers and forms a relatively flat surface. It also includes ribs that provide further support. The device further includes support members that provide a spacing means for ventilation. The device also includes locking members that hold the cover and the base together. The device also contains individual cups with corrugations that further prevent bruises and spoilage of the fruit.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: August 5, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Robert Knoss, Calvin S. Krupa
  • Fruit box
    Patent number: 5590805
    Abstract: A rigid, sturdy, two-piece reusable container forming individual cups to contain fruit or other perishables. The device includes a brace that provides support, rigidity, separates the cups of different containers and forms a relatively flat surface. It also includes ribs that provide further support. The device further includes support members that provide a spacing means for ventilation. The device also includes locking members that hold the cover and the base together. The device also contains individual cups with corrugations that further prevent bruises and spoilage of the fruit.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: January 7, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Robert Knoss, Calvin S. Krupa
  • Bread tray
    Patent number: D361514
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: August 22, 1995
    Assignee: Ultra Pac, Inc.
    Inventors: Clavin S. Krupa, Robert Knoss
  • Clamshell package for cored pineapple fruit
    Patent number: D361714
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: August 29, 1995
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Food container
    Patent number: D371940
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: July 23, 1996
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Egg container
    Patent number: D371961
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: July 23, 1996
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Base for angel food cakes
    Patent number: D371964
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: July 23, 1996
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Cake container
    Patent number: D374820
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: October 22, 1996
    Assignee: Ultra Pac, Inc.
    Inventors: Robert Knoss, Calvin S. Krupa
  • Food container
    Patent number: D376314
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: December 10, 1996
    Assignee: Ultra Pac, Inc.
    Inventor: Calvin S. Krupa
  • Stackable berry container with hinged lid
    Patent number: D377450
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: January 21, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Stackable berry container with hinged lid
    Patent number: D378192
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: February 25, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Fruit container
    Patent number: D379300
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: May 20, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Fruit container
    Patent number: D380381
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: July 1, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Egg carton
    Patent number: D385780
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: November 4, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Fruit container
    Patent number: D385784
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: November 4, 1997
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Pie container
    Patent number: D391850
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: March 10, 1998
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Chicken container
    Patent number: D394807
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: June 2, 1998
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Food container
    Patent number: D395796
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: July 7, 1998
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Food container
    Patent number: D395985
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: July 14, 1998
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss
  • Vegetable container
    Patent number: D421695
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: March 21, 2000
    Assignee: Ultra Pac, Inc.
    Inventors: Calvin S. Krupa, Robert Knoss