Stephen Douglas
8Patents
3h-index
15Co-inventors
54Inventor score
Filing activity: Dec 5, 1985 → Aug 26, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5943089A | Method and apparatus for viewing an object and for viewing a device that acts upon the object | Electricity | 24 | Expired |
| US4662656A | Pipeline coupling | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US8012070B2 | Portable mountable upper-body exercise device | Emerging Cross-Sectional Technologies | 6 | Active |
| US7108001B2 | Method and apparatus for rotation of a workpiece in supercritical fluid solutions for removing photo resist, residues and particles therefrom | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6739821B2 | Vertical conveyor device for various sized payloads | Fixed Constructions | 1 | Expired |
| US8209252B1 | Method of and system for protecting an initial investment value of an investment | Physics | 0 | Active |
| US7472086B1 | Method of protecting an initial investment value of an investment | Physics | 0 | Active |
| US7475033B1 | Method of protecting an initial investment value of an investment | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.