Patents by Inventor Paul G. Hartung

Paul G. Hartung 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).

  • Apparatuses and kits for teaching mathematics
    Patent number: 5876212
    Abstract: A method and apparatus of teaching mathematical problem solving includes using a series of containers, each consisting of an inherent problem requiring the use of mathematical skills for solution. The series of containers meets all conditions for the teaching of mathematics as recommended by the National Council of Teachers of Mathematics in their 1989 document "The Standards". The complete solution satisfying "The Standards" for each container ordinarily takes a period of days. A kit consisting of such containers is disclosed.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: March 2, 1999
    Assignee: Safe-T Products, Inc.
    Inventor: Paul G. Hartung