Patents by Inventor James M. Karabaic

James M. Karabaic 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).

  • Base ten primary teaching kit
    Patent number: 6758675
    Abstract: A kit containing an Instructor unit sized for presentation to a group and multiple Child training units both set up to allow students to visually model and relate addition, subtraction, multiplication, and division in primary mathematics. The manipulative units include a plurality of colored cubes arranged in slots so that the movement of particular cubes from one side of the slots to the other side represents numbers in a mathematical operation. Tally trays of five slots may be removed from the device and hold up to 10 cubes to demonstrate regrouping operations on a mat.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: July 6, 2004
    Inventor: James M. Karabaic
  • Base ten primary teaching kit
    Publication number: 20040023196
    Abstract: A kit containing an Instructor unit sized for presentation to a group and multiple Child training units both set up to allow students to visually model and relate addition, subtraction, multiplication, and division in primary mathematics. The manipulative units include a plurality of colored cubes arranged in slots so that the movement of particular cubes from one side of the slots to the other side represents numbers in a mathematical operation. Tally trays of five slots may be removed from the device and hold up to 10 cubes to demonstrate regrouping operations on a mat.
    Type: Application
    Filed: May 28, 2003
    Publication date: February 5, 2004
    Inventor: James M. Karabaic
  • Base ten primary teaching kit
    Patent number: 6595778
    Abstract: A kit containing an Instructor unit sized for presentation to a group and multiple Child training units both set up to allow students to visually model and relate addition, subtraction, multiplication, and division in prinmry mathematics.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: July 22, 2003
    Inventor: James M. Karabaic