Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8589107 | Measurement instrument and method | — | 2013-11-19 |
| 8195418 | Pressure measurement instrument and method | — | 2012-06-05 |
| 7656165 | Method and apparatus for maintaining emission capabilities of hot cathodes in harsh environments | Larry K. Carmichael, Paul C. Arnold, Stephen C. Blouch, Richard A. Knott | 2010-02-02 |
| 7429863 | Method and apparatus for maintaining emission capabilities of hot cathodes in harsh environments | Larry K. Carmichael, Paul C. Arnold, Stephen C. Blouch, Richard A. Knott | 2008-09-30 |
| 7418869 | Wide-range combination vacuum gauge | Paul C. Arnold, Paul M. Rutt | 2008-09-02 |
| 7331237 | Technique for improving Pirani gauge temperature compensation over its full pressure range | — | 2008-02-19 |
| 7249516 | Method of operating a resistive heat-loss pressure sensor | Paul C. Arnold | 2007-07-31 |
| 7207224 | Wide-range combination vacuum gauge | Paul M. Rutt | 2007-04-24 |
| 6945119 | Apparatus and methods for heat loss pressure measurement | Daniel G. Bills | 2005-09-20 |
| 6938493 | Apparatus and methods for heat loss pressure measurement | Daniel G. Bills | 2005-09-06 |
| 6865952 | Apparatus and methods for heat loss pressure measurement | Daniel G. Bills | 2005-03-15 |
| 6799468 | Apparatus and methods for heat loss pressure measurement | — | 2004-10-05 |
| 6658941 | Apparatus and methods for heat loss pressure measurement | Daniel G. Bills | 2003-12-09 |
| 6227056 | Methods of pressure measurement | Daniel G. Bills | 2001-05-08 |
| 6023979 | Apparatus and methods for heat loss pressure measurement | Daniel G. Bills | 2000-02-15 |
| 5452613 | Wide range vacuum gauge | Daniel G. Bills | 1995-09-26 |
| 5422573 | Ionization gauge and method of using and calibrating same | Daniel G. Bills, Paul C. Arnold | 1995-06-06 |
| 5296817 | Ionization gauge and method of using and calibrating same | Daniel G. Bills, Paul C. Arnold | 1994-03-22 |
| 5250906 | Ionization gauge and method of using and calibrating same | Daniel G. Bills | 1993-10-05 |