Norbert L. Johnson
4Patents
3h-index
5Co-inventors
47Inventor score
Filing activity: Jul 31, 1978 → May 12, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6450393B1 | Multiple-material prototyping by ultrasonic adhesion | Emerging Cross-Sectional Technologies | 104 | Expired |
| US5940212A | Cube corner article with altered inactive areas and method of making same | Emerging Cross-Sectional Technologies | 30 | Expired |
| UST987003I4 | Retroluminometer | General | 26 | Expired |
| US8675194B2 | Apparatus for measuring the retroreflectance of materials | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.