Egil D. Castel

FS Fairchild Semiconductor: 1 patents #419 of 715Top 60%

NS National Semiconductor: 1 patents #1,247 of 2,238Top 60%

📍 Cupertino, CA: #4,039 of 6,989 inventorsTop 60%

🗺 California: #185,134 of 386,348 inventorsTop 50%

Overall (All Time): #2,330,205 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4839311	Etch back detection	Paul E. Riley, Vivek Kulkarni	1989-06-13
4824521	Planarization of metal pillars on uneven substrates	Vivek Kulkarni	1989-04-25