Marc E. Christensen
24Patents
13h-index
15Co-inventors
78Inventor score
Filing activity: Jul 20, 1994 → Jul 21, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5836714A | Control barrier systems | Physics | 85 | Expired |
| US5611641A | Crowd control barrier system | Physics | 71 | Expired |
| US6086285A | Interlocking control barrier systems | Fixed Constructions | 38 | Expired |
| US6676113B2 | Control barrier with rotatable legs | Fixed Constructions | 37 | Expired |
| US5993103A | Control barrier with support legs | Fixed Constructions | 33 | Expired |
| US5452963A | Crowd control barrier | Physics | 33 | Expired |
| US7789585B2 | Control barrier with rotatable legs | Fixed Constructions | 24 | Active |
| USD552250S1 | Interlocking barrier | General | 22 | Expired |
| US7540682B1 | Control barrier with rotatable legs | Fixed Constructions | 22 | Active |
| USD569992S1 | Traffic barrier | General | 21 | Expired |
| US7275888B1 | Interlocking barriers | Fixed Constructions | 20 | Expired |
| USD599488S1 | Control barrier with rotatable legs | General | 17 | Expired |
| USD533281S1 | Barrier with interlocking sides | General | 16 | Expired |
| USD555804S1 | Low profile barrier | General | 13 | Expired |
| US8167512B2 | Low profile barriers having attached molded pins | Emerging Cross-Sectional Technologies | 12 | Active |
| US7588387B1 | Barriers with interlocking sides | Fixed Constructions | 11 | Active |
| US8808600B1 | Methods for manufacturing barrier systems having a retained coupling pin | Emerging Cross-Sectional Technologies | 11 | Active |
| USD614984S1 | Barricade | General | 10 | Expired |
| US8453995B2 | Control barrier | Fixed Constructions | 9 | Active |
| USD546969S1 | Low profile barrier | General | 9 | Expired |
| US7922420B2 | Barriers with kiss-offs | Fixed Constructions | 6 | Active |
| US8939675B2 | Barrier systems with interlocking flag | Emerging Cross-Sectional Technologies | 3 | Active |
| US9016668B1 | Stackable barrier with connector | Fixed Constructions | 3 | Active |
| USD702581S1 | Stand barricade | General | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.