Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6561218 | Small internal volume fluid mass flow control apparatus | — | 2003-05-13 |
| 6443174 | Fluid mass flow control valve and method of operation | — | 2002-09-03 |
| 5901741 | Flow controller, parts of flow controller, and related method | Hai Son Bui Duong | 1999-05-11 |
| 5850850 | Flow controller, parts of flow controller, and related method | — | 1998-12-22 |
| 5765283 | Method of making a flow controller | — | 1998-06-16 |
| 5660207 | Flow controller, parts of flow controller, and related method | — | 1997-08-26 |
| 5359878 | Apparatus and method for in-line calibration verification of mass flow meters | — | 1994-11-01 |
| 5321992 | Measurement of gas flows with enhanced accuracy | Daniel Vreeland | 1994-06-21 |
| 5305638 | Mass flowmeter having non-adjustable flow splitter | Hamid Saghatchi, Charles F. Drexel | 1994-04-26 |
| 5285673 | Method for in-line calibration verification of mass flow meters | Charles F. Drexel | 1994-02-15 |
| 5259243 | Flow sensor | Charles F. Drexel, Hamid Saghatchi | 1993-11-09 |
| 5044199 | Flowmeter | Charles F. Drexel | 1991-09-03 |