| 7467555 |
Pressure transmitter with multiple reference pressure sensors |
John P. Schulte, Mark G. Romo |
2008-12-23 |
| 7197225 |
Variable optical attenuator |
Mark G. Romo, Charles R. Willcox |
2007-03-27 |
| 6895161 |
Variable optical attenuator |
Mark G. Romo, Liang-Ju Lu, Charles R. Willcox |
2005-05-17 |
| 6662662 |
Pressure transmitter with improved isolator system |
Christina A. Nord, David A. Horky, Kenneth Guttsen, Thomas Earl Johnson, Jr., Matthew G. Sherin +11 more |
2003-12-16 |
| 6612174 |
Optical pressure sensor |
Fred C. Sittler, Charles R. Willcox |
2003-09-02 |
| 6516671 |
Grain growth of electrical interconnection for microelectromechanical systems (MEMS) |
Mark G. Romo, Mark A. Lutz, Fred C. Sittler, Adrian C. Toy |
2003-02-11 |
| 6473711 |
Interchangeable differential, absolute and gage type of pressure transmitter |
Fred C. Sittler, Carl R. Gansen |
2002-10-29 |
| 6425290 |
Oil-less differential pressure sensor |
Charles R. Willcox, Mark A. Lutz, Mark G. Romo |
2002-07-30 |
| 6047244 |
Multiple range transition method and apparatus for process control sensors |
— |
2000-04-04 |
| 5760310 |
Transmitter with fill fluid loss detection |
William E. Petrich, Bennett L. Louwagie, Terrance F. Krouth |
1998-06-02 |
| 5022270 |
Extended measurement capability transmitter having shared overpressure protection means |
— |
1991-06-11 |
| 4949581 |
Extended measurement capability transmitter having shared overpressure protection means |
— |
1990-08-21 |
| 4944187 |
Multimodulus pressure sensor |
Roger L. Frick |
1990-07-31 |
| 4905575 |
Solid state differential pressure sensor with overpressure stop and free edge construction |
Thomas A. Knecht, Ahmed Naumaan |
1990-03-06 |
| 4777826 |
Twin film strain gauge system |
Mark G. Romo, Robert C. Bohara, Thomas A. Knecht |
1988-10-18 |
| 4389895 |
Capacitance pressure sensor |
— |
1983-06-28 |