Travis E. Ell
13Patents
9h-index
13Co-inventors
65Inventor score
Filing activity: Feb 19, 1986 → Nov 26, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7440214B1 | Disk drive and method having cost-effective storage of the disk drive's internal program code | Physics | 131 | Expired |
| US6958881B1 | Disk drive control system having a servo processing accelerator circuit | Physics | 113 | Expired |
| US4691152A | Data disk drive velocity estimator | Physics | 41 | Expired |
| US6493177B1 | Microactuator assisted seek and hysteresis correction method and apparatus for a disk drive | Physics | 29 | Expired |
| US6563665B1 | PQ enhanced observer based dual stage servo controller | Physics | 28 | Expired |
| US6542326B1 | Microactuator-induced reactive forces for fine positioning a sensor | Physics | 27 | Expired |
| US6490118B1 | Adaptive h-infinity hardware controller for disc drive actuator control | Physics | 26 | Expired |
| US6590734B1 | Observer based dual stage servo controller with gain boost to accomodate rotational vibration | Physics | 15 | Expired |
| US6490121B1 | Accelerated servo control calculations method and apparatus for a disc drive | Physics | 12 | Expired |
| US6674605B1 | PQ enhanced dual stage servo controller | Physics | 9 | Expired |
| US6469863B1 | Active magnetic bearing system for improved servo control | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6604121B1 | Digital division device and method using a reduced-sized lookup table | Physics | 4 | Expired |
| US6671121B1 | Minimizing milli-actuator reactive impulse and excessive power current | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.