Carl Liepold
21Patents
8h-index
25Co-inventors
75Inventor score
Filing activity: Nov 6, 1991 → Oct 13, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5408235A | Second order Sigma-Delta based analog to digital converter having superior analog components and having a programmable comb filter coupled to the digital signal processor | Electricity | 111 | Expired |
| US9473144B1 | Integrated circuit device with programmable analog subsystem | Electricity | 45 | Active |
| US6252209A | Adaptive temperature control circuit with PWM output | Physics | 25 | Expired |
| US6348882B1 | 5-ary receiver utilizing common mode insensitive differential offset comparator | Electricity | 20 | Expired |
| US5202590A | Subthreshold sense circuit for clamping an injected current | Electricity | 11 | Expired |
| US8779783B1 | Mutual capacitance sensing using a self-capacitance sensing device | Physics | 11 | Active |
| US9176636B1 | Low power capacitive sensor button | Electricity | 10 | Active |
| US7857510B2 | Temperature sensing circuit | Physics | 9 | Expired |
| US5694439A | Bi-directional low pass filtering method and apparatus | Electricity | 7 | Expired |
| US5841821A | Bi-directional low pass filtering method and apparatus | Electricity | 5 | Expired |
| US6198421A | Neural-flash analog-to-digital converter using weighted current similation | Electricity | 4 | Expired |
| US5436628A | Programmable frequency timing generator with phase adjust | Physics | 3 | Expired |
| US9634667B2 | Integrated circuit device with programmable analog subsystem | Electricity | 3 | Active |
| US9652015B2 | Low-power touch button sensing system | Emerging Cross-Sectional Technologies | 2 | Active |
| US10303236B2 | Low-power touch button sensing system | Emerging Cross-Sectional Technologies | 1 | Active |
| US10116307B2 | Low power capacitive sensor button | Electricity | 1 | Active |
| US6081139A | Differential amplifier with lateral bipolar transistor | Electricity | 1 | Expired |
| US9960773B2 | Integrated circuit device with programmable analog subsystem | Electricity | 0 | Active |
| US12003217B2 | Oscillator frequency compensation with a fixed capacitor | Electricity | 0 | Active |
| US11275423B2 | Low-power touch button sensing system | Emerging Cross-Sectional Technologies | 0 | Active |
| US10558313B2 | Low power capacitive sensor button | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.