Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12411081 | Combustion-zone chemical sensing system and associated method | Eric Christopher Huelson, Torrey Hayden | 2025-09-09 |
| 12321015 | Demultiplexing filter and method | Andrew D. Sappey, Pei Huang | 2025-06-03 |
| 11513069 | TDLAS architecture for widely spaced wavelengths | Andrew D. Sappey | 2022-11-29 |
| 10948184 | Method and apparatus for monitoring port blockage for TDLAS measurements in harsh environments | Michael J. Estes, Andrew D. Sappey | 2021-03-16 |
| 10830698 | TDLAS architecture for widely spaced wavelength | Andrew D. Sappey | 2020-11-10 |
| 10371378 | Method and apparatus for monitoring port blockage for TDLAS measurements in harsh environments | Michael J. Estes, Andrew D. Sappey | 2019-08-06 |
| 10352852 | TDLAS architecture for widely spaced wavelengths | Andrew D. Sappey | 2019-07-16 |
| 9366621 | In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer | Jim Howell, Rod W. Harris, David M. Giltner, Atilio Jobson, Michael J. Estes +1 more | 2016-06-14 |
| 8786856 | Method and apparatus for monitoring combustion properties in an interior of a boiler | Michael J. Estes, Andrew D. Sappey, Henrik Hofvander, Allen Molitoris, Pei Huang | 2014-07-22 |
| 8786857 | Mitigation of optical signal noise using a multimode transmit fiber | James Richard Howell, Henrik Hofvander, Andrew D. Sappey | 2014-07-22 |
| 8699011 | Time-synchronized TDLAS measurements of pressure and temperature in a gas turbine engine | Henrik Hofvander, Andrew D. Sappey, James Richard Howell, David Owenby, Lee Sutherland +1 more | 2014-04-15 |
| 8544279 | Method and apparatus for spectroscopic measurements in the combustion zone of a gas turbine engine | Andrew D. Sappey, Henrik Hofvander | 2013-10-01 |
| 7787728 | Optical mode noise averaging device | Eric Christopher Huelson, Ian Smith | 2010-08-31 |
| 7729566 | Method for the monitoring and control of a process | Andrew D. Sappey, James Richard Howell, Henrik Hofvander | 2010-06-01 |
| 7469092 | Method and apparatus for the monitoring and control of a process | Andrew D. Sappey, James Richard Howell, Henrik Hofvander | 2008-12-23 |
| 7389027 | Method and apparatus for the monitoring and control of a process | Andrew D. Sappey, James Richard Howell, Henrik Hofvander | 2008-06-17 |
| 7248755 | Method and apparatus for the monitoring and control of combustion | Andrew D. Sappey, James Richard Howell, Henrick Hofvander | 2007-07-24 |
| 6925234 | Flexure apparatus and method for achieving efficient optical coupling | Nikolai Alexeev | 2005-08-02 |
| 6724787 | Low noise solid state laser | Henrik Hofvander | 2004-04-20 |