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

Roy Gustafson

DEDigital Equipment: 3 patents #412 of 2,100Top 20%
STSeagate Technology: 3 patents #1,519 of 4,626Top 35%
Boxborough, MA: #92 of 320 inventorsTop 30%
Massachusetts: #20,307 of 88,656 inventorsTop 25%
Overall (All Time): #874,745 of 4,157,543Top 25%
6 Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6987637 Magnetic recording system which eliminates skew angle effect Dmitri Litvinov, Sakhrat Khizroev 2006-01-17
6738233 Perpendicular magnetic recording head with a magnetic shield to reduce side reading Sakhrat Khizroev, Dmitri Litvinov, Nisha Shukla 2004-05-18
6660357 Perpendicular magnetic recording media with laminated soft magnetic underlayer Dmitri Litvinov, Sakhrat Khizroev, James K. Howard 2003-12-09
5412691 Method and apparatus for equalization for transmission over a band-limited channel Simon A. Ginzburg, David Newman 1995-05-02
4849711 Automatic gain control system Michael D. Leis 1989-07-18
4495529 Qualifier circuit 1985-01-22