Inventor
Roger Charles Hart
Inventor
Gilbert, AZ, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Sprimary
G01SRadio direction-finding43%
B64GCosmonautics14%
G04GElectronic time-pieces14%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses14%
H04BTransmission14%
PatentTitleYear
6,633,621'Apparatus and method for synchronizing a clock using a phase-locked loop circuit'20036,535,801'Method and apparatus for accurately determining the position of satellites in geosynchronous orbits'20036,313,787'Method and apparatus for assisted GPS protocol'20016,134,484'Method and apparatus for maintaining the integrity of spacecraft based time and position using GPS'2000Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2000–2003Patents assigned to MOTOROLA INC (3)· patent assignee history
2000–2003Based in Gilbert, AZ, US· patent location history
2003Patents assigned to GEN DYNAMICS DECISION SYSTEMS (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MOTOROLA INC | 3 | 2000–2003 |
| GEN DYNAMICS DECISION SYSTEMS | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gilbert, AZ, US | 4 | 2000–2003 |