Syquest Technology, Inc.
🏢 View company profile →48Patents
0Active
48Granted
30Portfolio score
Filing activity: Jun 4, 1982 → May 31, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5550685A | Applying an adaptive feed-forward algorithm as a frequency selective filter in a closed loop disk drive servo system in order to compensate for periodic perturbations which otherwise appear in the servo system position error signal | Physics | 101 | Expired |
| US5523902A | Servo burst pattern for removing offset caused by magnetic distortion and method associated therewith | Physics | 93 | Expired |
| US4683506A | Disc drive arrangement for a hard disc cartridge with a read/write head retract mechanism | Physics | 87 | Expired |
| US4965685A | Removable cartridge disc drive with radial arm voice coil actuator | Physics | 72 | Expired |
| US4504879A | Disc drive arrangement | Physics | 71 | Expired |
| US4864437A | Head loading velocity control | Physics | 69 | Expired |
| US4965691A | Sealed removable cartridge for use with a high density disc drive with magnetic clutch | Physics | 67 | Expired |
| US4722012A | Disc drive arrangement for a hard disc cartridge having a carriage for accurately positioning a head relative to the cartridge | Physics | 61 | Expired |
| US4870518A | Removable cartridge disc drive with radial arm voice coil actuator | Physics | 49 | Expired |
| US5444586A | Removable cartridge for a disk drive with a 1.8 inch form factor | Physics | 48 | Expired |
| US4920462A | Disc drive fine servo velocity control and method for head positioning relative to a disc | Physics | 48 | Expired |
| US4864452A | Removable cartridge with lockable access door | Physics | 47 | Expired |
| US5317464A | Removable cartridge disk drive with cartridge interlocking and spindle motor telescoping mechanisms | Physics | 47 | Expired |
| US5175657A | Disc drive with magnetic coupling to a head actuator in a removable disc cartridge and with spindle motor rotor configured into the removable disc cartridge | Physics | 46 | Expired |
| US4503474A | Disc drive cartridge arrangement | Physics | 44 | Expired |
| US5262918A | Removable cartridge with a 2.5 inch form factor and an interlocking mechanism adapted for use in a disk drive | Physics | 43 | Expired |
| US4717981A | Hard disc cartridge arrangement with an automatically activated door | Physics | 41 | Expired |
| US5218503A | 31/2 inch removable cartridge for a disk drive | Physics | 40 | Expired |
| US4974103A | High density disc drive with magnetic clutch for use with a sealed removable cartridge | Physics | 39 | Expired |
| US5886846A | Method for applying optimal seeking technique to disk file with excessive repeatable runout | Physics | 39 | Expired |
| US5422775A | 31/2 inch removable cartridge for a disk drive | Physics | 37 | Expired |
| US4630190A | Servo control apparatus for a disk drive | Physics | 37 | Expired |
| US4488187A | Servo control apparatus | Physics | 33 | Expired |
| US5280403A | 31/2 inch removable cartridge for a disk drive | Physics | 32 | Expired |
| US5398141A | Removable cartridge disk drive with a 2.5 inch form factor utilizing a cartridge having a rotatable disk access door | Physics | 29 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.