Inventor
John J. Christensen
Inventor
Manteca, CA, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Vprimary
G06VImage or video recognition or understanding22%
G07CTime or attendance registers22%
G07FCoin-freed or like apparatus22%
G02BOptical elements, systems or apparatus11%
G10KSound-producing devices11%
LOC1611%
PatentTitleYear
D0407096'Tree top inspection video camera'19995,673,338'System for verification of unique items'1997D0370183'Indoor chimes'19965,521,984'System for registration, identification and verification of items utilizing unique intrinsic features'19965,408,553'Optical power splitter for splitting high power light'19955,072,208'Electromechanical chaotic chiming mechanism'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1999Patents assigned to CHRISTENSEN JOHN J (3)· patent assignee history
1991–1999Based in Manteca, CA, US· patent location history
1995Patents assigned to US ARMY (1)· patent assignee history
1996–1997Patents assigned to VERIFICATION TECHNOLOGIES INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHRISTENSEN JOHN Jself | 3 | 1991–1999 |
| VERIFICATION TECHNOLOGIES INC | 2 | 1996–1997 |
| US ARMY | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Manteca, California, US | 6 | 1991–1999 |