Patents by Inventor Tirza Ernst

Tirza Ernst 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).

  • Talking toy scanner
    Patent number: 6532314
    Abstract: A toy scanner is disclosed capable of scanning printed price indicators and audibly and visually displaying the scanned price. The price indicators are printed in carbon ink and the toy scanner includes a conductive rubber strip located on the reading face of the scanner for reading the carbon ink printed price indicators. The scanned price is visually displayed on an LCD display. The scanned price is audibly displayed by a voice synthesizer and loud speaker combination which “talks” the scanned price. A mute switch is included for turning off the talk feature. The scanner also includes a random number generator for generating a random price, which is also audibly and visually displayed, upon activation of a random price activation switch.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: March 11, 2003
    Assignee: Learning Resources, Inc.
    Inventors: Barbara Plain, Tirza Ernst, Samuel Nguy
  • Educational device
    Patent number: D531669
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: November 7, 2006
    Assignee: Learning Resources, Inc.
    Inventors: Gayle E. Gordon, Tirza Ernst
  • Digital/analog teaching clock
    Patent number: D377949
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: February 11, 1997
    Inventors: Richard Woldenberg, Jane Woldenberg, Tirza Ernst, Barbara Plain
  • Teaching scale
    Patent number: D400813
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: November 10, 1998
    Assignee: Learning Resources, Inc.
    Inventors: Eric Toriumi, Tirza Ernst