Inventor
David J. Cowl
Inventor
Sunnyvale, CA, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Cprimary
G01CMeasuring distances, levels or bearings26%
G01SRadio direction-finding26%
B60GVehicle suspension arrangements13%
G08GTraffic control systems13%
G09BEducational or demonstration appliances13%
G09GArrangements or circuits for control of indicating devices using static means to present variable information9%
PatentTitleYear
8,264,507'Gray scale drive sequences for pulse width modulated displays'20128,111,271'Gray scale drive sequences for pulse width modulated displays'20126,411,899'Position based personal digital assistant'20026,353,796'Vehicle tracker, mileage-time monitor and calibrator'20026,266,612'Position based personal digital assistant'20016,088,650'Vehicle tracker, mileage-time monitor and calibrator'20005,987,378'Vehicle tracker mileage-time monitor and calibrator'19995,938,721'Position based personal digital assistant'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2002Patents assigned to TRIMBLE NAVIGATION LTD (6)· patent assignee history
1999–2002Based in Sunnyvale, CA, US· patent location history
2012Patents assigned to COWL DAVID JOHN (2)· patent assignee history
2012Patents assigned to HUDSON EDWIN LYLE (2)· patent assignee history
2012Patents assigned to JASPER DISPLAY CORP (2)· patent assignee history
2012Based in Santa Clara, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TRIMBLE NAVIGATION LTD | 6 | 1999–2002 |
| COWL DAVID JOHNself | 2 | 2012 |
| HUDSON EDWIN LYLE | 2 | 2012 |
| JASPER DISPLAY CORP | 2 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sunnyvale, California, US | 6 | 1999–2002 |
| Santa Clara, California, US | 2 | 2012 |