James R. Hellums
22Patents
10h-index
21Co-inventors
75Inventor score
Filing activity: Feb 7, 1980 → Jan 21, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4797631A | Folded cascode amplifier with rail-to-rail common-mode range | Electricity | 60 | Expired |
| US6384664B1 | Differential voltage sense circuit to detect the state of a CMOS process compatible fuses at low power supply voltages | Physics | 40 | Expired |
| US6741129B1 | Differential amplifier slew rate boosting scheme | Electricity | 37 | Expired |
| US4890052A | Temperature constant current reference | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4359680A | Reference voltage circuit | Physics | 15 | Expired |
| US5999043A | On-chip high resistance device for passive low pass filters with programmable poles | Electricity | 15 | Expired |
| US5525927A | MOS current mirror capable of operating in the triode region with minimum output drain-to source voltage | Physics | 14 | Expired |
| US5362988A | Local mid-rail generator circuit | Physics | 14 | Expired |
| US6671663B1 | Time domain noise analysis | Physics | 13 | Expired |
| US6316993A | Analog circuitry for start-up glitch suppression | Electricity | 12 | Expired |
| US6346851B1 | Low-pass filter with improved high frequency attenuation | Electricity | 9 | Expired |
| US6413824B1 | METHOD TO PARTIALLY OR COMPLETELY SUPPRESS POCKET IMPLANT IN SELECTIVE CIRCUIT ELEMENTS WITH NO ADDITIONAL MASK IN A CMOS FLOW WHERE SEPARATE MASKING STEPS ARE USED FOR THE DRAIN EXTENSION IMPLANTS FOR THE LOW VOLTAGE AND HIGH VOLTAGE TRANSISTORS | Electricity | 8 | Expired |
| US6157241A | Fuse trim circuit that does not prestress fuses | Physics | 7 | Expired |
| US5302888A | CMOS integrated mid-supply voltage generator | Physics | 7 | Expired |
| US5136255A | Amplifier circuit | Electricity | 6 | Expired |
| US7915882B2 | Start-up circuit and method for a self-biased zero-temperature-coefficient current reference | Physics | 6 | Active |
| US6208277A | High speed analog to digital conversion circuitry using quantum mechanical tunneling structures | Performing Operations; Transporting | 5 | Expired |
| US5808484A | Method and apparatus for detecting changes in a clock signal to static states | Electricity | 3 | Expired |
| US6962369B2 | Spare wheel assembly | Performing Operations; Transporting | 2 | Expired |
| US5589784A | Method and apparatus for detecting changes in a clock signal to static states | Electricity | 2 | Expired |
| US4330769A | Single electrode sense circuit for charge-coupled transversal filters | Electricity | 2 | Expired |
| US7777569B2 | Anti-pop method and apparatus for class AB amplifiers | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.