Robert J. Ferran
21Patents
9h-index
7Co-inventors
68Inventor score
Filing activity: May 20, 1985 → Feb 28, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4823603A | Capacitance manometer having stress relief for fixed electrode | Physics | 53 | Expired |
| US4720807A | Adaptive pressure control system | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5396803A | Dual balanced capacitance manometers for suppressing vibration effects | Physics | 29 | Expired |
| US5401962A | Residual gas sensor utilizing a miniature quadrupole array | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5613294A | Method of making a residual gas sensor utilizing a miniature quadrupole array | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6837112B2 | Capacitance manometer having a relatively thick flush diaphragm under tension to provide low hysteresis | Physics | 23 | Expired |
| US8283831B1 | Brushless DC motor having multiple parallel windings | Electricity | 20 | Active |
| US8862420B2 | Multi-axis tilt sensor for correcting gravitational effects on the measurement of pressure by a capacitance diaphragm gauge | Physics | 17 | Active |
| US5857890A | Residual gas sensor utilizing a miniature quadrupole array | Emerging Cross-Sectional Technologies | 12 | Expired |
| US8604655B1 | Multi-phase permanent magnet brushless DC electric motor | Electricity | 9 | Active |
| US7040244B1 | Watercraft having plural narrow hulls and having submerged passive flotation devices | Performing Operations; Transporting | 8 | Expired |
| US8997548B2 | Apparatus and method for automatic detection of diaphragm coating or surface contamination for capacitance diaphragm gauges | Physics | 4 | Active |
| US8760221B1 | Method and apparatus for acquiring noise reduced high frequency signals | Physics | 3 | Active |
| US8997575B2 | Method and apparatus for damping diaphragm vibration in capacitance diaphragm gauges | Physics | 2 | Active |
| US8901993B1 | Method and apparatus for acquiring noise reduced high frequency signals | Physics | 1 | Active |
| US9683908B2 | Method and system for monitoring gas pressure for reference cavity of capacitance diaphragm gauge | Physics | 1 | Active |
| US9677964B2 | Apparatus and method for automatic detection of diaphragm coating or surface contamination for capacitance diaphragm gauges | Physics | 1 | Active |
| US8965725B2 | Automatic calibration adjustment of capacitance diaphragm gauges to compensate for errors due to changes in atmospheric pressure | Physics | 0 | Active |
| US9719877B2 | Method and apparatus for damping diaphragm vibration in capacitance diaphragm gauges | Physics | 0 | Active |
| US8997576B2 | Method and system for monitoring gas pressure for reference cavity of capacitance diaphragm gauge | Physics | 0 | Active |
| US9360391B2 | Multi-axis tilt sensor for correcting gravitational effects on the measurement of pressure by a capacitance diaphragm gauge | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.