Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
IJ

Ivan L. Johnston

IEInterstate Electronics: 3 patents #6 of 43Top 15%
LCL-3 Communications: 3 patents #88 of 507Top 20%
LEL3Harris Interstate Electronics: 1 patents #3 of 6Top 50%
Corona, CA: #204 of 1,452 inventorsTop 15%
California: #82,707 of 386,348 inventorsTop 25%
Overall (All Time): #705,497 of 4,157,543Top 20%
7 Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
11733389 Global navigation satellite system spoofer identification technique based on carrier to noise ratio signatures Gilberto I. Sada, Steven B. Alexander 2023-08-22
11194053 Global navigation satellite system spoofer identification technique based on carrier to noise ratio signatures Gilberto I. Sada, Steven B. Alexander 2021-12-07
10545246 Global navigation satellite system spoofer identification technique based on carrier to noise ratio signatures Gilberto I. Sada, Steven B. Alexander 2020-01-28
7471744 Efficient space-time adaptive processing (STAP) filter for global positioning system (GPS) receivers Robert J. Van Wechel 2008-12-30
7292663 Efficient space-time adaptive processing (STAP) filter for global positioning system (GPS) receivers Robert J. Van Wechel 2007-11-06
7197095 Inverse fast fourier transform (IFFT) with overlap and add Robert J. Van Wechel 2007-03-27
6952460 Efficient space-time adaptive processing (STAP) filter for global positioning system (GPS) receivers Robert J. Van Wechel 2005-10-04