Robert J. Youngquist
22Patents
15h-index
22Co-inventors
81Inventor score
Filing activity: May 6, 1974 → May 19, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5450257A | Head-tape alignment system and method | Physics | 73 | Expired |
| US5280402A | Combined stepper motor and voice coil head positioning apparatus | Physics | 64 | Expired |
| US5434732A | Balanced cantilevered head positioning mechanism for multitrack tape recorder | Physics | 44 | Expired |
| US5675448A | Track pitch error compensation system for data cartridge tape drives | Physics | 39 | Expired |
| US5008765A | Method and apparatus for reading or writing on tape using a servo positioned multiple channel head | Physics | 38 | Expired |
| US5229895A | Multi-track servo recording head assembly | Physics | 38 | Expired |
| US5661616A | Track servo control method for data cartridge tape drives | Physics | 34 | Expired |
| US5572378A | Direct file access system for magnetic tape | Physics | 31 | Expired |
| US6134070A | Encoded servo track configurations, servo writer and systems/method regarding same | Physics | 27 | Expired |
| US5946156A | Tape servo system and methods, write/read heads, and servo track configurations regarding same | Physics | 24 | Expired |
| US4791643A | Single track orthogonal error correction system | Electricity | 23 | Expired |
| US6330123A | Head assembly having a single pass servo writer | Physics | 17 | Expired |
| US4351007A | Editor for combining digitally recorded audio signals | Physics | 17 | Expired |
| US5426543A | Servo positioning system for magnetic recording media | Physics | 16 | Expired |
| US3978403A | Automatic tracking signal analyzer | Physics | 15 | Expired |
| US5339202A | Method and apparatus for amplitude compensated write equalization | Physics | 14 | Expired |
| US4292684A | Format for digital tape recorder | Physics | 11 | Expired |
| US5390054A | Method and system for minimizing the error rate of a digital recording system by predicting the optimal bias current | Physics | 7 | Expired |
| US4473818A | Bipolar digital to analog converter | Electricity | 6 | Expired |
| US6025967A | Method of identifying magnetic tape characteristics | Physics | 5 | Expired |
| US3999286A | Method of making multitrack heads | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6091565A | Head assembly having a single pass servo writer | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.