John J. Christensen
6Patents
5h-index
4Co-inventors
48Inventor score
Filing activity: Jul 2, 1990 → Jun 16, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5521984A | System for registration, identification and verification of items utilizing unique intrinsic features | Physics | 175 | Expired |
| US5673338A | System for verification of unique items | Physics | 114 | Expired |
| US5072208A | Electromechanical chaotic chiming mechanism | Physics | 58 | Expired |
| US5408553A | Optical power splitter for splitting high power light | Physics | 30 | Expired |
| USD407096S | Tree top inspection video camera | General | 6 | Expired |
| USD370183S | Indoor chimes | General | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.