Guzik Technical Enterprises
90Patents
42Active
90Granted
46Portfolio score
Filing activity: Aug 12, 1985 → Dec 2, 2020 · 11 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4710686A | Method and apparatus for control of current in a motor winding | Electricity | 92 | Expired |
| US7158324B2 | Self-adjusting PRML receiver | Electricity | 75 | Expired |
| US4958839A | Disc clamp employing resilient cone for spreading balls | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4902971A | Magnetic head and disc tester employing pivot arm on linearly movable slide | Physics | 41 | Expired |
| US5490091A | Histograms of processed noise samples for measuring error rate of a PRML data detection channel | Physics | 33 | Expired |
| US4627288A | Bearing unloading mechanism for disc clamping unit | Physics | 25 | Expired |
| US6229303A | Spinstand for testing magnetic heads and disks | Physics | 22 | Expired |
| US7408495B2 | Digital equalization of multiple interleaved analog-to-digital converters | Electricity | 22 | Active |
| US6229304A | Apparatus for air flow stabilization in spinstands with a shroud assembly and a shell assembly | Physics | 21 | Expired |
| US6023145A | Head and disk tester with a thermal drift-compensated closed-loop positioning system | Physics | 20 | Expired |
| US6242910A | Magnetic head and disk tester with yaw correction | Physics | 20 | Expired |
| US4829545A | Method and apparatus for data window centering ina multifrequency data separator | Electricity | 19 | Expired |
| US5825180A | Magnetic disk test apparatus having heads moveable along substantially parallel axes | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5355261A | Method and apparatus for measuring error rate of magnetic recording devices having a partial response maximum likelihood data detection channel | Physics | 19 | Expired |
| US5254946A | Magnetic head and disk tester with head centrally mounted on radially-moving, rotatable platform that surrounds disk | Physics | 17 | Expired |
| US5491413A | Positioning device for magnetic head and disk tester with rotating tool support | Physics | 16 | Expired |
| US7141969B2 | X-Y spinstand platform with flexure-coupled platen | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6212045A | Method and apparatus for loading a magnetic head onto a magnetic disk | Physics | 16 | Expired |
| US7295002B2 | Vacuum chuck spinstand for testing magnetic heads and disks | Physics | 15 | Expired |
| US4680516A | Motor speed control system | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6006614A | Apparatus and method for improving dynamic characteristics of a fine-positioning mechanism in a magnetic head/disk tester | Physics | 15 | Expired |
| US6236201A | Magnetic head and disk tester with pitch correction | Physics | 13 | Expired |
| US5796541A | Servo track writing measurement of gapped initial clock track to write full clock track | Physics | 13 | Expired |
| US7880463B2 | Automated disk clamping method for spinstand for testing magnetic heads and disks | Physics | 12 | Active |
| US5382887A | Method and apparatus for compensating positioning error in magnetic-head and magnetic-disk tester | Physics | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.