Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9719877 | Method and apparatus for damping diaphragm vibration in capacitance diaphragm gauges | — | 2017-08-01 |
| 9683908 | Method and system for monitoring gas pressure for reference cavity of capacitance diaphragm gauge | David J. Ferran | 2017-06-20 |
| 9677964 | Apparatus and method for automatic detection of diaphragm coating or surface contamination for capacitance diaphragm gauges | David J. Ferran | 2017-06-13 |
| 9360391 | Multi-axis tilt sensor for correcting gravitational effects on the measurement of pressure by a capacitance diaphragm gauge | David J. Ferran | 2016-06-07 |
| 8997576 | Method and system for monitoring gas pressure for reference cavity of capacitance diaphragm gauge | David J. Ferran | 2015-04-07 |
| 8997548 | Apparatus and method for automatic detection of diaphragm coating or surface contamination for capacitance diaphragm gauges | David J. Ferran | 2015-04-07 |
| 8997575 | Method and apparatus for damping diaphragm vibration in capacitance diaphragm gauges | — | 2015-04-07 |
| 8965725 | Automatic calibration adjustment of capacitance diaphragm gauges to compensate for errors due to changes in atmospheric pressure | David J. Ferran | 2015-02-24 |
| 8901993 | Method and apparatus for acquiring noise reduced high frequency signals | — | 2014-12-02 |
| 8862420 | Multi-axis tilt sensor for correcting gravitational effects on the measurement of pressure by a capacitance diaphragm gauge | David J. Ferran | 2014-10-14 |
| 8760221 | Method and apparatus for acquiring noise reduced high frequency signals | — | 2014-06-24 |
| 8604655 | Multi-phase permanent magnet brushless DC electric motor | — | 2013-12-10 |
| 8283831 | Brushless DC motor having multiple parallel windings | Ilya Kaminsky | 2012-10-09 |
| 7040244 | Watercraft having plural narrow hulls and having submerged passive flotation devices | — | 2006-05-09 |
| 6837112 | Capacitance manometer having a relatively thick flush diaphragm under tension to provide low hysteresis | Daniel Rohrbach, Michael Oswald | 2005-01-04 |
| 5857890 | Residual gas sensor utilizing a miniature quadrupole array | — | 1999-01-12 |
| 5613294 | Method of making a residual gas sensor utilizing a miniature quadrupole array | — | 1997-03-25 |
| 5401962 | Residual gas sensor utilizing a miniature quadrupole array | — | 1995-03-28 |
| 5396803 | Dual balanced capacitance manometers for suppressing vibration effects | — | 1995-03-14 |
| 4823603 | Capacitance manometer having stress relief for fixed electrode | Gordon E. Osterstrom | 1989-04-25 |
| 4720807 | Adaptive pressure control system | Anthony J. Tessicini, Timothy Robert Brown | 1988-01-19 |