John Lull
40Patents
15h-index
16Co-inventors
78Inventor score
Filing activity: Jun 15, 1981 → Jun 25, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4484217A | Method and system for remote reporting, particularly for pay television billing | Electricity | 352 | Expired |
| US6752166B2 | Method and apparatus for providing a determined ratio of process fluids | Emerging Cross-Sectional Technologies | 87 | Expired |
| US7073392B2 | Methods and apparatus for pressure compensation in a mass flow controller | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6923568B2 | Method and apparatus for blending process materials | Performing Operations; Transporting | 52 | Expired |
| US6962164B2 | System and method for a mass flow controller | Emerging Cross-Sectional Technologies | 43 | Expired |
| US7905139B2 | Mass flow controller with improved dynamic | Physics | 26 | Active |
| US7905653B2 | Method and apparatus for blending process materials | Performing Operations; Transporting | 23 | Expired |
| US7434477B2 | Methods and apparatus for pressure compensation in a mass flow controller | Emerging Cross-Sectional Technologies | 22 | Active |
| US7636640B2 | Multi-gas flow device | Emerging Cross-Sectional Technologies | 21 | Active |
| US4394769A | Dual modulus counter having non-inverting feedback | Electricity | 19 | Expired |
| US7748268B2 | Thermal flow meter | Physics | 18 | Active |
| US7273063B2 | Methods and apparatus for pressure compensation in a mass flow controller | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7231931B2 | System and method for a mass flow controller | Emerging Cross-Sectional Technologies | 17 | Expired |
| US8751180B2 | Methods and apparatus for pressure compensation in a mass flow controller | Emerging Cross-Sectional Technologies | 15 | Active |
| US7380564B2 | System and method for a mass flow controller | Emerging Cross-Sectional Technologies | 15 | Active |
| US7272512B2 | Flow sensor signal conversion | Physics | 14 | Expired |
| US6941965B2 | Method and apparatus for providing a determined ratio of process fluids | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7360551B2 | Method and apparatus for providing a determined ratio of process fluids | Emerging Cross-Sectional Technologies | 12 | Active |
| US6845659B2 | Variable resistance sensor with common reference leg | Physics | 11 | Expired |
| US9562796B2 | Absolute and differential pressure transducer | Physics | 11 | Active |
| US7143774B2 | Method and apparatus for providing a determined ratio of process fluids | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7424894B2 | Method and apparatus for providing a determined ratio of process fluids | Emerging Cross-Sectional Technologies | 10 | Active |
| US7043374B2 | Flow sensor signal conversion | Physics | 9 | Expired |
| US8068999B2 | Multi-gas flow device | Emerging Cross-Sectional Technologies | 8 | Active |
| US8010303B2 | Multi-gas flow device | Emerging Cross-Sectional Technologies | 7 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.