Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12124272 | Vehicle location information correction based on another vehicle | Eric P. Knutson, David M. Spell | 2024-10-22 |
| 12117296 | System and method for determining movement of a vehicle based on information regarding movement of at least one other vehicle | Eric P. Knutson, David M. Spell | 2024-10-15 |
| 11914048 | System and method for determining vehicle location | Eric P. Knutson, David M. Spell | 2024-02-27 |
| 11781868 | System and method for GNSS reflective surface mapping and position fix estimation | Eric P. Knutson, Bradley S. Coon | 2023-10-10 |
| 11525926 | System and method for position fix estimation using two or more antennas | Eric P. Knutson, David M. Spell | 2022-12-13 |
| 11435481 | Vehicle position information based on multiple sources | Eric P. Knutson, David M. Spell | 2022-09-06 |
| 11359920 | Dead-reckoning guidance system and method with cardinal-direction based coordinate-corrections | Eric P. Knutson, David M. Spell | 2022-06-14 |
| 11187534 | System and method for GNSS reflective surface mapping and position fix estimation | Eric P. Knutson, Bradley S. Coon | 2021-11-30 |
| 11107357 | Process and system for assisting vehicle operations with safe passing | Eric P. Knutson, David M. Spell | 2021-08-31 |
| 11022698 | System and method for determining vehicle location | Eric P. Knutson, David M. Spell | 2021-06-01 |
| 10845197 | Dead-reckoning guidance system and method with cardinal-direction based coordinate-corrections | Eric P. Knutson, David M. Spell | 2020-11-24 |
| 7215784 | Programmable audio system for automotive vehicles | Larry D. Lechlitner, Tom V. Cornell | 2007-05-08 |
| 6917794 | Phase compensation circuit | Jeffrey J. Marrah, Rohail Pervez, Myron Glen Padgett, Richard A. Kennedy, Matthew Yarosz | 2005-07-12 |
| 5991609 | Low cost digital automatic alignment method and apparatus | Jeffrey J. Marrah, Thomas J. Kennelly, Michael John Easterwood, Ronald W Dale | 1999-11-23 |
| 5937337 | Method and apparatus for reducing FM intrusion in AM receivers | Jeffrey J. Marrah, Michael John Easterwood | 1999-08-10 |
| 4996499 | Amplitude stabilized oscillator amplifier | Seyed R. Zarabadi | 1991-02-26 |