Ferdinand Hendriks
61Patents
13h-index
59Co-inventors
87Inventor score
Filing activity: Oct 22, 1976 → Dec 19, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5021906A | Programmable air bearing slider including magnetic read/write element | Emerging Cross-Sectional Technologies | 122 | Expired |
| US6707444B1 | Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems | Physics | 56 | Expired |
| US6681056B1 | Method and system for digital image acquisition and continuous zoom display from multiple resolutional views using a heterogeneous image pyramid representation | Physics | 54 | Expired |
| US5550693A | Air bearing slider having projections that provide minimal actual contact area | Physics | 53 | Expired |
| US5940249A | Shielded air bearing slider | Physics | 46 | Expired |
| US5424888A | Speed independent, air bearing slider | Physics | 43 | Expired |
| US7355584B2 | Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems | Physics | 39 | Active |
| US4097872A | Axial droplet aspirator | Performing Operations; Transporting | 35 | Expired |
| US6091570A | Architecture for guiding the air flow in a disk storage device | Physics | 27 | Expired |
| US5537273A | Speed and skew independent, air bearing slider | Physics | 21 | Expired |
| US7219233B1 | Methods and apparatus for associating a user with content in a collaborative whiteboard system | Physics | 19 | Expired |
| US4544889A | Robot precision probe positioner with guidance optics | Physics | 15 | Expired |
| US6075683A | Disk drive with passive multiple fly height slider and cooperative disk pattern | Physics | 13 | Expired |
| US4077040A | Guard jets in multiple nozzle printing | Performing Operations; Transporting | 12 | Expired |
| US4311436A | Fluid pressure and velocity sensing apparatus | Performing Operations; Transporting | 11 | Expired |
| US7203030B2 | System, method, and apparatus for aerodynamic diverter integrated with a diffuser in a bypass channel for applications in a disk storage device | Physics | 11 | Expired |
| US7136053B2 | Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems | Physics | 9 | Expired |
| US6917033B2 | Passive touch-sensitive optical marker | Physics | 9 | Expired |
| US5753803A | Apparatus and methods for maintaining a substantially constant temperature in a thermal proximity sensor | Physics | 7 | Expired |
| US8248725B2 | System and method to electrically ground fluid dynamic bearings | Electricity | 7 | Active |
| US8085488B2 | Predicting operational problems in a hard-disk drive (HDD) | Physics | 6 | Active |
| US7123439B2 | Aerodynamic diffuser, contraction, and fairing for disk base and re-acceleration drag reduction in hard disk drives | Physics | 5 | Expired |
| US7158342B2 | Hard disk drive with aerodynamic diffuser, contraction, and fairing for disk base and re-acceleration drag reduction | Physics | 4 | Expired |
| US7465098B2 | Spindle motor having variably grooved radial and thrust bearing with reduced groove angle near bearing entry | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8199426B2 | Method and system for providing hard disk shrouds with aerodynamic fences for suppressing flow induced disk excitation | Physics | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.