Patents by Inventor Natan Kogan

Natan Kogan 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).

  • Workbook with movable colored clips
    Patent number: 8192204
    Abstract: An educational workbook for very young children of preschool and kindergarten age, as well as children who are somewhat older but do not have developed fine motor skills, which extends the advantages of U.S. Pat. No. 6,402,522 having a hand-held booklet containing a series of problems with color-coded selectable answers and flat answer card having movable colored clips and compatible to the booklet. The answer card is typically enclosed in the booklet and can serve as a bookmark. Children record their answers by placing the selected colored clips into the corresponding positions on the answer card. Children check their own work by comparing site-by-site the colors of the clips on their answer with the colors of the child-friendly images on the corresponding answer key. No pencil is used, answer keys are easily readable, and exercises can be repeated many times since there is no trace of earlier responses.
    Type: Grant
    Filed: December 16, 2006
    Date of Patent: June 5, 2012
    Inventors: Eleonora Gabay, Natan Kogan
  • Workbook with movable colored tabs
    Patent number: 6402522
    Abstract: An educational device having a hand-held booklet containing a series of problems with color-coded selectable answers and flat answer card having movable colored tabs and compatible to the booklet. The answer card is typically enclosed in the booklet and can serve as a bookmark. Children record their answers by placing the selected colored tabs into the corresponding positions on the answer card. Children check their own work by comparing site-by-site the colors of the tabs on their answer card with the colors on the corresponding answer key. No pencil is used, answer keys are easily readable, and exercises can be repeated many times since there is no trace of earlier responses. Additionally, students' answer cards and answer key card may be stacked together and create for the teacher a color display of class or group understanding.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: June 11, 2002
    Inventors: Eleonora Gabay, Natan Kogan
  • Polyamine conjugates for treatment of infection
    Patent number: 6017906
    Abstract: The present invention relates to methods of preventing or treating an infection or disease caused by an infectious agent. The present invention also relates to the augmentation of the efficacy of existing anti-infective agents by the co-administration of the compounds described herein.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: January 25, 2000
    Assignee: Intercardia, Inc.
    Inventors: Clifford S. Mintz, Natan A. Kogan, Ramesh Kakarla, Helena R. Axelrod, Michael J. Sofia
  • Polyamine conjugates for treatment of infection
    Patent number: 5744453
    Abstract: The present invention relates to methods of preventing or treating an infection or disease caused by an infectious agent. The present invention also relates to the augmentation of the efficacy of existing anti-infective agents by the co-administration of the compounds described herein.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: April 28, 1998
    Inventors: Clifford S. Mintz, Natan A. Kogan, Ramesh Kakarla, Helena R. Axelrod, Michael J. Sofia