Inventor

EL-SADI ASHRAF I

US6 patents

⚠️ This page may combine multiple inventors who share the name “EL-SADI ASHRAF I”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

QUANTUM CORP

2 patents

US5798623AAug 25, 1998

Switch mode sine wave driver for polyphase brushless permanent magnet motor

QUANTUM CORP71 citations93

US6100656AAug 8, 2000

Start-up algorithm for a brushless sensorless motor

QUANTUM CORP79 citations91

UNISYS CORP

2 patents

US5027233AJun 25, 1991

Method for determining servo position data in a disk drive

UNISYS CORP10 citations71

US4885516ADec 5, 1989

Techniques for disk servo track following

UNISYS CORP4 citations60

MEMOREX CORP

2 patents

US4642541AFeb 10, 1987

Track following servo for higher density disk files

MEMOREX CORP11 citations71

US4577244AMar 18, 1986

Techniques for disk servo

MEMOREX CORP5 citations60