Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12210134 | Environmental monitoring system | David A. Drake, Glen A. Hill, Lawrence B Merchell | 2025-01-28 |
| 12111200 | Phased array radar for fluid sensing | David A. Drake, David B Rees, Lawrence B Merchell | 2024-10-08 |
| 11709222 | Manhole cover roadway electromagnetic safety device | David A. Drake | 2023-07-25 |
| 11686082 | Detection and monitoring system for the management of combined sewer systems | David A. Drake, David B Rees, Lawrence B Merchell, John D. Boyd | 2023-06-27 |
| 11346096 | Detection and monitoring system for the management of combined sewer systems | David A. Drake, David B Rees, Lawrence B Merchell, John D. Boyd | 2022-05-31 |
| 10901068 | Manhole cover roadway radar safety device | David A. Drake | 2021-01-26 |
| 10612228 | Detection and monitoring system for the management of combined sewer systems | David A. Drake, David B Rees, Lawrence B Merchell, John D. Boyd | 2020-04-07 |
| 9482568 | Detecting a sediment condition in a conduit | David A. Drake, Lawrence B Merchell | 2016-11-01 |
| 9297684 | Estimating flow rates of a liquid in a conduit | David A. Drake, Lawrence B Merchell, Justin H. Hobbs | 2016-03-29 |
| 8607654 | Platform for suspended sensor stabilization | Justin H. Hobbs, Daryl Norval, David A. Drake | 2013-12-17 |
| 7948215 | Methods and apparatuses for power generation in enclosures | David A. Drake | 2011-05-24 |
| 7944352 | Remote sensing and communication system | David A. Drake | 2011-05-17 |
| 7598858 | Methods, apparatuses, and systems for monitoring environmental parameters within an enclosure | David A. Drake | 2009-10-06 |
| 7589630 | Remote sensing and communication system | David A. Drake | 2009-09-15 |
| 7292143 | Remote sensing and communication system | David A. Drake | 2007-11-06 |
| 7072038 | Particle ID with narrow angle detectors | Hanno Ix | 2006-07-04 |
| 7057724 | Particulate info to field units | Donald C. Mead | 2006-06-06 |
| 6972424 | High detection rate particle identifier | Donald C. Mead, Hanno Ix | 2005-12-06 |
| 6774995 | Identification of particles in fluid | Hanno Ix | 2004-08-10 |
| 6628386 | Particle detection beam | Clay Davis, Donald C. Mead | 2003-09-30 |
| 6590652 | Flow through light scattering device | Craig R. Tisserat | 2003-07-08 |
| 6519033 | Identification of particles in fluid | Hanno Ix | 2003-02-11 |
| 4710025 | Process for characterizing suspensions of small particles | Philip J. Wyatt | 1987-12-01 |
| 4548500 | Process and apparatus for identifying or characterizing small particles | Philip J. Wyatt | 1985-10-22 |