RG

Robert Grzesek

MA Mattel: 4 patents #223 of 1,179Top 20%
Overall (All Time): #1,217,162 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8651953 Electronic game device and method of using the same Janice Ritter, Brian Yu, Tadd L. Callies, E. Ernst Ginkel, Darin Barri +1 more 2014-02-18
7387559 Toy vehicles and play sets with contactless identification Jorge Sanchez-Castro, Nicholas Amireh, Darin Barri 2008-06-17
6614719 Ultrasonic doppler effect speed measurement 2003-09-02
6422911 Toy device using through-the-body communication 2002-07-23