Mark H. Helmick
12Patents
7h-index
5Co-inventors
59Inventor score
Filing activity: Nov 23, 1985 → Dec 1, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6354501B1 | Composite authentication mark and system and method for reading the same | Physics | 67 | Expired |
| US6274873A | Spectrum analyzer for reading authentication marks | Physics | 25 | Expired |
| USD392147S | Simplified tape cartridge rack | General | 11 | Expired |
| US6271982A | Automated precision cassette handling system | Physics | 11 | Expired |
| US6381089B1 | Tape cassette storage and accessing system with closely spaced layered cassettes | Physics | 9 | Expired |
| US4782504A | Method and apparatus for an improved programmable X-ray film changer | Physics | 8 | Expired |
| USD692426S1 | Touchless pointing device | General | 7 | Active |
| US6560061B2 | High density tape library system | Physics | 6 | Expired |
| US8907894B2 | Touchless pointing device | Physics | 3 | Active |
| US7687934B2 | System and method for managing energy use in an electric vehicle | Emerging Cross-Sectional Technologies | 2 | Active |
| USD649152S1 | Touchless pointing device | General | 1 | Expired |
| US6762905B2 | High density tape library system | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.