Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10656050 | System and method for detecting a leak in an exhaust gas sampling apparatus | — | 2020-05-19 |
| 9829413 | Emissions measurement equipment and method | Ali Ganjidoost, Colin Chisholm | 2017-11-28 |
| 9297726 | Exhaust sampling system and method for water vapor management | William Martin Silvis, James Williamson, Douglas E. Miller | 2016-03-29 |
| 7607335 | Particulate sampler system flow calibration | Shahin Nudehi | 2009-10-27 |
| 7574307 | Engine exhaust emissions measurement correction | William Martin Silvis, Norbert Kreft, Wolfgang Schindler | 2009-08-11 |
| 7565846 | Particulate sampler and dilution gas flow device arrangement for an exhaust sampling system | William Martin Silvis, Wolfgang Schindler | 2009-07-28 |
| 7141090 | Active filter temperature control | Norbert Kreft | 2006-11-28 |
| 7055364 | Exhaust volume measurement device | William Martin Silvis, Norbert Kreft, James Williamson | 2006-06-06 |
| 7000449 | Exhaust volume measurement device | William Martin Silvis, Norbert Kreft, James Williamson | 2006-02-21 |
| 6962090 | Heated stainless steel emissions canister | Joseph McDonald, William Martin Silvis, Norbert Kreft | 2005-11-08 |
| 6857327 | Particulate sampling probe and dilution tunnel | William Martin Silvis, Norbert Kreft | 2005-02-22 |
| 6823748 | Active pulsation cancellation device for diesel particulate sampling systems | William Martin Silvis, Norbert Kreft, Wolfgang Schindler | 2004-11-30 |
| 6742407 | Particulate sampling probe and dilution tunnel | William Martin Silvis, Norbert Kreft | 2004-06-01 |
| 6481299 | Particulate sampling probe and dilution tunnel | William Martin Silvis, Norbert Kreft | 2002-11-19 |